CVE-2026-52720 (GCVE-0-2026-52720)

Vulnerability from cvelistv5 – Published: 2026-06-15 19:15 – Updated: 2026-07-28 16:27
VLAI
Title
Gstreamer1-plugins-bad-free: gstreamer: heap buffer overflow via crafted vnc server rectangle in librfb
Summary
A heap buffer overflow vulnerability was found in GStreamer's librfb (RFB/VNC client). The rectangle bounds check incorrectly validates area rather than individual dimensions, allowing a malicious VNC server to send a rectangle that extends beyond the framebuffer. A remote attacker could set up a malicious VNC server and trick a user into connecting, resulting in an out-of-bounds heap write that could lead to code execution or a crash.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:1.26.7-2.el10_2.4 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.2
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.16.1-8.el8_10 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
    cpe:/a:redhat:enterprise_linux:8::crb
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:1.16.1-4.el8_4.2 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.4::appstream
    cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:1.16.1-4.el8_4.2 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.4::appstream
    cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:1.16.1-4.el8_6.2 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.6::appstream
    cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:1.16.1-4.el8_6.2 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.6::appstream
    cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.22.12-7.el9_8.1 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:1.18.4-9.el9_2.3 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.2::appstream
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:1.22.1-6.el9_4.4 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.4::appstream
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:1.22.12-5.el9_6.4 , < * (rpm)
    cpe:/a:redhat:rhel_eus:9.6::appstream
    cpe:/a:redhat:rhel_eus:9.6::crb
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.16.1-8.el8_10 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.22.12-7.el9_8.1 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9
 Create a notification for this product.
Date Public
2026-06-15 00:00
Credits
Red Hat would like to thank JUNYI LIU for reporting this issue.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-52720",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-15T19:55:56.765375Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-15T19:56:22.065Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "affected": [
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/o:redhat:enterprise_linux:10.2"
            ],
            "defaultStatus": "affected",
            "packageName": "gstreamer1-plugins-bad-free",
            "product": "Red Hat Enterprise Linux 10",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:1.26.7-2.el10_2.4",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:enterprise_linux:8"
            ],
            "defaultStatus": "affected",
            "packageName": "gstreamer1-plugins-bad-free",
            "product": "Red Hat Enterprise Linux 8",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:1.16.1-8.el8_10",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:enterprise_linux:9"
            ],
            "defaultStatus": "affected",
            "packageName": "gstreamer1-plugins-bad-free",
            "product": "Red Hat Enterprise Linux 9",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:1.22.12-7.el9_8.1",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/o:redhat:enterprise_linux:6"
            ],
            "defaultStatus": "unknown",
            "packageName": "gstreamer-plugins-bad-free",
            "product": "Red Hat Enterprise Linux 6",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/o:redhat:enterprise_linux:7"
            ],
            "defaultStatus": "affected",
            "packageName": "gstreamer1-plugins-bad-free",
            "product": "Red Hat Enterprise Linux 7",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/o:redhat:enterprise_linux:7"
            ],
            "defaultStatus": "affected",
            "packageName": "gstreamer-plugins-bad-free",
            "product": "Red Hat Enterprise Linux 7",
            "vendor": "Red Hat"
          }
        ],
        "datePublic": "2026-06-15T00:00:00.000Z",
        "descriptions": [
          {
            "lang": "en",
            "value": "A heap buffer overflow vulnerability was found in GStreamer\u0027s librfb (RFB/VNC client). The rectangle bounds check incorrectly validates area rather than individual dimensions, allowing a malicious VNC server to send a rectangle that extends beyond the framebuffer. A remote attacker could set up a malicious VNC server and trick a user into connecting, resulting in an out-of-bounds heap write that could lead to code execution or a crash."
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "namespace": "https://access.redhat.com/security/updates/classification/",
                "value": "Important"
              },
              "type": "Red Hat severity rating"
            }
          },
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 8.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "REQUIRED",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
              "version": "3.1"
            },
            "format": "CVSS"
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-122",
                "description": "Heap-based Buffer Overflow",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-24T12:05:27.770Z",
          "orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
          "shortName": "redhat-SADP"
        },
        "references": [
          {
            "tags": [
              "vdb-entry",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/security/cve/CVE-2026-52720"
          },
          {
            "name": "RHBZ#2486731",
            "tags": [
              "issue-tracking",
              "x_refsource_REDHAT"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2486731"
          },
          {
            "tags": [
              "x_sadp-csaf-vex"
            ],
            "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-52720.json"
          },
          {
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2026:36749"
          },
          {
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2026:37130"
          },
          {
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2026:36834"
          }
        ],
        "solutions": [
          {
            "lang": "en",
            "value": "RHSA-2026:36749: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:37130: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux CRB (v. 8)"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:36834: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2026-05-19T00:00:00.000Z",
            "value": "Reported to Red Hat."
          },
          {
            "lang": "en",
            "time": "2026-06-15T00:00:00.000Z",
            "value": "Made public."
          }
        ],
        "title": "gstreamer1-plugins-bad-free: GStreamer: Heap buffer overflow via crafted VNC server rectangle in librfb",
        "workarounds": [
          {
            "lang": "en",
            "value": "Red Hat is not aware of a practical temporary workaround that fully mitigates this issue or meets Red Hat Product Security\u0027s standards for usability, deployment, applicability, or stability. Customers are advised to apply the relevant security updates if they become available."
          }
        ],
        "x_adpType": "supplier",
        "x_generator": {
          "engine": "sadp-cli 1.0.0"
        }
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:10.2"
          ],
          "defaultStatus": "affected",
          "packageName": "gstreamer1-plugins-bad-free",
          "product": "Red Hat Enterprise Linux 10",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.26.7-2.el10_2.4",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:enterprise_linux:8::appstream",
            "cpe:/a:redhat:enterprise_linux:8::crb"
          ],
          "defaultStatus": "affected",
          "packageName": "gstreamer1-plugins-bad-free",
          "product": "Red Hat Enterprise Linux 8",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.16.1-8.el8_10",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_aus:8.4::appstream",
            "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "gstreamer1-plugins-bad-free",
          "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.16.1-4.el8_4.2",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_aus:8.4::appstream",
            "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "gstreamer1-plugins-bad-free",
          "product": "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.16.1-4.el8_4.2",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_aus:8.6::appstream",
            "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "gstreamer1-plugins-bad-free",
          "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.16.1-4.el8_6.2",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_aus:8.6::appstream",
            "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "gstreamer1-plugins-bad-free",
          "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.16.1-4.el8_6.2",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:enterprise_linux:9::appstream",
            "cpe:/a:redhat:enterprise_linux:9::crb"
          ],
          "defaultStatus": "affected",
          "packageName": "gstreamer1-plugins-bad-free",
          "product": "Red Hat Enterprise Linux 9",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.22.12-7.el9_8.1",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_e4s:9.2::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "gstreamer1-plugins-bad-free",
          "product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.18.4-9.el9_2.3",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_e4s:9.4::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "gstreamer1-plugins-bad-free",
          "product": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.22.1-6.el9_4.4",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_eus:9.6::appstream",
            "cpe:/a:redhat:rhel_eus:9.6::crb"
          ],
          "defaultStatus": "affected",
          "packageName": "gstreamer1-plugins-bad-free",
          "product": "Red Hat Enterprise Linux 9.6 Extended Update Support",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.22.12-5.el9_6.4",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:6"
          ],
          "defaultStatus": "unknown",
          "packageName": "gstreamer-plugins-bad-free",
          "product": "Red Hat Enterprise Linux 6",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:7"
          ],
          "defaultStatus": "affected",
          "packageName": "gstreamer1-plugins-bad-free",
          "product": "Red Hat Enterprise Linux 7",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:7"
          ],
          "defaultStatus": "affected",
          "packageName": "gstreamer-plugins-bad-free",
          "product": "Red Hat Enterprise Linux 7",
          "vendor": "Red Hat"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Red Hat would like to thank JUNYI LIU for reporting this issue."
        }
      ],
      "datePublic": "2026-06-15T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "A heap buffer overflow vulnerability was found in GStreamer\u0027s librfb (RFB/VNC client). The rectangle bounds check incorrectly validates area rather than individual dimensions, allowing a malicious VNC server to send a rectangle that extends beyond the framebuffer. A remote attacker could set up a malicious VNC server and trick a user into connecting, resulting in an out-of-bounds heap write that could lead to code execution or a crash."
        }
      ],
      "metrics": [
        {
          "other": {
            "content": {
              "namespace": "https://access.redhat.com/security/updates/classification/",
              "value": "Important"
            },
            "type": "Red Hat severity rating"
          }
        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-122",
              "description": "Heap-based Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-28T16:27:34.590Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "name": "RHSA-2026:36749",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2026:36749"
        },
        {
          "name": "RHSA-2026:36834",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2026:36834"
        },
        {
          "name": "RHSA-2026:37130",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2026:37130"
        },
        {
          "name": "RHSA-2026:47069",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2026:47069"
        },
        {
          "name": "RHSA-2026:47070",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2026:47070"
        },
        {
          "name": "RHSA-2026:47071",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2026:47071"
        },
        {
          "name": "RHSA-2026:47075",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2026:47075"
        },
        {
          "name": "RHSA-2026:47076",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2026:47076"
        },
        {
          "tags": [
            "vdb-entry",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/security/cve/CVE-2026-52720"
        },
        {
          "name": "RHBZ#2486731",
          "tags": [
            "issue-tracking",
            "x_refsource_REDHAT"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2486731"
        },
        {
          "url": "https://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5105"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-05-19T00:00:00.000Z",
          "value": "Reported to Red Hat."
        },
        {
          "lang": "en",
          "time": "2026-06-15T00:00:00.000Z",
          "value": "Made public."
        }
      ],
      "title": "Gstreamer1-plugins-bad-free: gstreamer: heap buffer overflow via crafted vnc server rectangle in librfb",
      "workarounds": [
        {
          "lang": "en",
          "value": "Red Hat is not aware of a practical temporary workaround that fully mitigates this issue or meets Red Hat Product Security\u0027s standards for usability, deployment, applicability, or stability. Customers are advised to apply the relevant security updates if they become available."
        }
      ],
      "x_generator": {
        "engine": "cvelib 1.8.0"
      },
      "x_redhatCweChain": "CWE-122: Heap-based Buffer Overflow"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2026-52720",
    "datePublished": "2026-06-15T19:15:19.808Z",
    "dateReserved": "2026-06-08T11:07:26.008Z",
    "dateUpdated": "2026-07-28T16:27:34.590Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-52720",
      "date": "2026-07-28",
      "epss": "0.0053",
      "percentile": "0.41714"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-52720\",\"sourceIdentifier\":\"secalert@redhat.com\",\"published\":\"2026-06-15T20:16:32.580\",\"lastModified\":\"2026-07-28T17:16:48.577\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A heap buffer overflow vulnerability was found in GStreamer\u0027s librfb (RFB/VNC client). The rectangle bounds check incorrectly validates area rather than individual dimensions, allowing a malicious VNC server to send a rectangle that extends beyond the framebuffer. A remote attacker could set up a malicious VNC server and trick a user into connecting, resulting in an out-of-bounds heap write that could lead to code execution or a crash.\"}],\"affected\":[{\"source\":\"secalert@redhat.com\",\"affectedData\":[{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux 10\",\"defaultStatus\":\"affected\",\"collectionURL\":\"https://access.redhat.com/downloads/content/package-browser/\",\"packageName\":\"gstreamer1-plugins-bad-free\",\"cpes\":[\"cpe:/o:redhat:enterprise_linux:10.2\"],\"versions\":[{\"version\":\"0:1.26.7-2.el10_2.4\",\"lessThan\":\"*\",\"versionType\":\"rpm\",\"status\":\"unaffected\"}]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux 8\",\"defaultStatus\":\"affected\",\"collectionURL\":\"https://access.redhat.com/downloads/content/package-browser/\",\"packageName\":\"gstreamer1-plugins-bad-free\",\"cpes\":[\"cpe:/a:redhat:enterprise_linux:8::appstream\",\"cpe:/a:redhat:enterprise_linux:8::crb\"],\"versions\":[{\"version\":\"0:1.16.1-8.el8_10\",\"lessThan\":\"*\",\"versionType\":\"rpm\",\"status\":\"unaffected\"}]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support\",\"defaultStatus\":\"affected\",\"collectionURL\":\"https://access.redhat.com/downloads/content/package-browser/\",\"packageName\":\"gstreamer1-plugins-bad-free\",\"cpes\":[\"cpe:/a:redhat:rhel_aus:8.4::appstream\",\"cpe:/a:redhat:rhel_eus_long_life:8.4::appstream\"],\"versions\":[{\"version\":\"0:1.16.1-4.el8_4.2\",\"lessThan\":\"*\",\"versionType\":\"rpm\",\"status\":\"unaffected\"}]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On\",\"defaultStatus\":\"affected\",\"collectionURL\":\"https://access.redhat.com/downloads/content/package-browser/\",\"packageName\":\"gstreamer1-plugins-bad-free\",\"cpes\":[\"cpe:/a:redhat:rhel_aus:8.4::appstream\",\"cpe:/a:redhat:rhel_eus_long_life:8.4::appstream\"],\"versions\":[{\"version\":\"0:1.16.1-4.el8_4.2\",\"lessThan\":\"*\",\"versionType\":\"rpm\",\"status\":\"unaffected\"}]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support\",\"defaultStatus\":\"affected\",\"collectionURL\":\"https://access.redhat.com/downloads/content/package-browser/\",\"packageName\":\"gstreamer1-plugins-bad-free\",\"cpes\":[\"cpe:/a:redhat:rhel_aus:8.6::appstream\",\"cpe:/a:redhat:rhel_eus_long_life:8.6::appstream\"],\"versions\":[{\"version\":\"0:1.16.1-4.el8_6.2\",\"lessThan\":\"*\",\"versionType\":\"rpm\",\"status\":\"unaffected\"}]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On\",\"defaultStatus\":\"affected\",\"collectionURL\":\"https://access.redhat.com/downloads/content/package-browser/\",\"packageName\":\"gstreamer1-plugins-bad-free\",\"cpes\":[\"cpe:/a:redhat:rhel_aus:8.6::appstream\",\"cpe:/a:redhat:rhel_eus_long_life:8.6::appstream\"],\"versions\":[{\"version\":\"0:1.16.1-4.el8_6.2\",\"lessThan\":\"*\",\"versionType\":\"rpm\",\"status\":\"unaffected\"}]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux 9\",\"defaultStatus\":\"affected\",\"collectionURL\":\"https://access.redhat.com/downloads/content/package-browser/\",\"packageName\":\"gstreamer1-plugins-bad-free\",\"cpes\":[\"cpe:/a:redhat:enterprise_linux:9::appstream\",\"cpe:/a:redhat:enterprise_linux:9::crb\"],\"versions\":[{\"version\":\"0:1.22.12-7.el9_8.1\",\"lessThan\":\"*\",\"versionType\":\"rpm\",\"status\":\"unaffected\"}]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions\",\"defaultStatus\":\"affected\",\"collectionURL\":\"https://access.redhat.com/downloads/content/package-browser/\",\"packageName\":\"gstreamer1-plugins-bad-free\",\"cpes\":[\"cpe:/a:redhat:rhel_e4s:9.2::appstream\"],\"versions\":[{\"version\":\"0:1.18.4-9.el9_2.3\",\"lessThan\":\"*\",\"versionType\":\"rpm\",\"status\":\"unaffected\"}]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions\",\"defaultStatus\":\"affected\",\"collectionURL\":\"https://access.redhat.com/downloads/content/package-browser/\",\"packageName\":\"gstreamer1-plugins-bad-free\",\"cpes\":[\"cpe:/a:redhat:rhel_e4s:9.4::appstream\"],\"versions\":[{\"version\":\"0:1.22.1-6.el9_4.4\",\"lessThan\":\"*\",\"versionType\":\"rpm\",\"status\":\"unaffected\"}]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux 9.6 Extended Update Support\",\"defaultStatus\":\"affected\",\"collectionURL\":\"https://access.redhat.com/downloads/content/package-browser/\",\"packageName\":\"gstreamer1-plugins-bad-free\",\"cpes\":[\"cpe:/a:redhat:rhel_eus:9.6::appstream\",\"cpe:/a:redhat:rhel_eus:9.6::crb\"],\"versions\":[{\"version\":\"0:1.22.12-5.el9_6.4\",\"lessThan\":\"*\",\"versionType\":\"rpm\",\"status\":\"unaffected\"}]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux 6\",\"defaultStatus\":\"unknown\",\"collectionURL\":\"https://access.redhat.com/downloads/content/package-browser/\",\"packageName\":\"gstreamer-plugins-bad-free\",\"cpes\":[\"cpe:/o:redhat:enterprise_linux:6\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux 7\",\"defaultStatus\":\"affected\",\"collectionURL\":\"https://access.redhat.com/downloads/content/package-browser/\",\"packageName\":\"gstreamer1-plugins-bad-free\",\"cpes\":[\"cpe:/o:redhat:enterprise_linux:7\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux 7\",\"defaultStatus\":\"affected\",\"collectionURL\":\"https://access.redhat.com/downloads/content/package-browser/\",\"packageName\":\"gstreamer-plugins-bad-free\",\"cpes\":[\"cpe:/o:redhat:enterprise_linux:7\"]}]},{\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\",\"affectedData\":[{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux 10\",\"defaultStatus\":\"affected\",\"collectionURL\":\"https://access.redhat.com/downloads/content/package-browser/\",\"packageName\":\"gstreamer1-plugins-bad-free\",\"cpes\":[\"cpe:/o:redhat:enterprise_linux:10.2\"],\"versions\":[{\"version\":\"0:1.26.7-2.el10_2.4\",\"lessThan\":\"*\",\"versionType\":\"rpm\",\"status\":\"unaffected\"}]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux 8\",\"defaultStatus\":\"affected\",\"collectionURL\":\"https://access.redhat.com/downloads/content/package-browser/\",\"packageName\":\"gstreamer1-plugins-bad-free\",\"cpes\":[\"cpe:/a:redhat:enterprise_linux:8\"],\"versions\":[{\"version\":\"0:1.16.1-8.el8_10\",\"lessThan\":\"*\",\"versionType\":\"rpm\",\"status\":\"unaffected\"}]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux 9\",\"defaultStatus\":\"affected\",\"collectionURL\":\"https://access.redhat.com/downloads/content/package-browser/\",\"packageName\":\"gstreamer1-plugins-bad-free\",\"cpes\":[\"cpe:/a:redhat:enterprise_linux:9\"],\"versions\":[{\"version\":\"0:1.22.12-7.el9_8.1\",\"lessThan\":\"*\",\"versionType\":\"rpm\",\"status\":\"unaffected\"}]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux 6\",\"defaultStatus\":\"unknown\",\"collectionURL\":\"https://access.redhat.com/downloads/content/package-browser/\",\"packageName\":\"gstreamer-plugins-bad-free\",\"cpes\":[\"cpe:/o:redhat:enterprise_linux:6\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux 7\",\"defaultStatus\":\"affected\",\"collectionURL\":\"https://access.redhat.com/downloads/content/package-browser/\",\"packageName\":\"gstreamer1-plugins-bad-free\",\"cpes\":[\"cpe:/o:redhat:enterprise_linux:7\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux 7\",\"defaultStatus\":\"affected\",\"collectionURL\":\"https://access.redhat.com/downloads/content/package-browser/\",\"packageName\":\"gstreamer-plugins-bad-free\",\"cpes\":[\"cpe:/o:redhat:enterprise_linux:7\"]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"secalert@redhat.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H\",\"baseScore\":8.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":5.9},{\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H\",\"baseScore\":8.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":5.9}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-06-15T19:55:56.765375Z\",\"id\":\"CVE-2026-52720\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"total\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"secalert@redhat.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-122\"}]},{\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-122\"}]}],\"references\":[{\"url\":\"https://access.redhat.com/errata/RHSA-2026:36749\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://access.redhat.com/errata/RHSA-2026:36834\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://access.redhat.com/errata/RHSA-2026:37130\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://access.redhat.com/errata/RHSA-2026:47069\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://access.redhat.com/errata/RHSA-2026:47070\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://access.redhat.com/errata/RHSA-2026:47071\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://access.redhat.com/errata/RHSA-2026:47075\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://access.redhat.com/errata/RHSA-2026:47076\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://access.redhat.com/security/cve/CVE-2026-52720\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=2486731\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5105\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://access.redhat.com/errata/RHSA-2026:36749\",\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\"},{\"url\":\"https://access.redhat.com/errata/RHSA-2026:36834\",\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\"},{\"url\":\"https://access.redhat.com/errata/RHSA-2026:37130\",\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\"},{\"url\":\"https://access.redhat.com/security/cve/CVE-2026-52720\",\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\"},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=2486731\",\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\"},{\"url\":\"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-52720.json\",\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-07-28T18:38:28+00:00",
      "cve": "CVE-2026-52720",
      "id": "CVE-2026-52720",
      "initial_release_date": "2026-06-15T00:00:00+00:00",
      "product_status:fixed": "256",
      "product_status:known_affected": "9",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "gstreamer1-plugins-bad-free: GStreamer: Heap buffer overflow via crafted VNC server rectangle in librfb",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-52720.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-07-24T02:20:11Z",
      "cve": "CVE-2026-52720",
      "id": "CVE-2026-52720",
      "initial_release_date": "2026-06-18T01:53:38Z",
      "product_status:first_fixed": "132",
      "product_status:known_affected": "181",
      "product_status:recommended": "694",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-52720",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-52720.json",
      "version": "8"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"gstreamer1-plugins-bad-free: GStreamer: Heap buffer overflow via crafted VNC server rectangle in librfb\", \"metrics\": [{\"other\": {\"type\": \"Red Hat severity rating\", \"content\": {\"value\": \"Important\", \"namespace\": \"https://access.redhat.com/security/updates/classification/\"}}}, {\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 8.8, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"REQUIRED\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"HIGH\"}}], \"affected\": [{\"cpes\": [\"cpe:/o:redhat:enterprise_linux:10.2\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Enterprise Linux 10\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"0:1.26.7-2.el10_2.4\", \"lessThan\": \"*\", \"versionType\": \"rpm\"}], \"packageName\": \"gstreamer1-plugins-bad-free\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:enterprise_linux:8\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Enterprise Linux 8\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"0:1.16.1-8.el8_10\", \"lessThan\": \"*\", \"versionType\": \"rpm\"}], \"packageName\": \"gstreamer1-plugins-bad-free\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:enterprise_linux:9\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Enterprise Linux 9\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"0:1.22.12-7.el9_8.1\", \"lessThan\": \"*\", \"versionType\": \"rpm\"}], \"packageName\": \"gstreamer1-plugins-bad-free\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/o:redhat:enterprise_linux:6\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Enterprise Linux 6\", \"packageName\": \"gstreamer-plugins-bad-free\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"unknown\"}, {\"cpes\": [\"cpe:/o:redhat:enterprise_linux:7\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Enterprise Linux 7\", \"packageName\": \"gstreamer1-plugins-bad-free\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/o:redhat:enterprise_linux:7\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Enterprise Linux 7\", \"packageName\": \"gstreamer-plugins-bad-free\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"affected\"}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2026-05-19T00:00:00.000Z\", \"value\": \"Reported to Red Hat.\"}, {\"lang\": \"en\", \"time\": \"2026-06-15T00:00:00.000Z\", \"value\": \"Made public.\"}], \"solutions\": [{\"lang\": \"en\", \"value\": \"RHSA-2026:36749: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)\"}, {\"lang\": \"en\", \"value\": \"RHSA-2026:37130: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux CRB (v. 8)\"}, {\"lang\": \"en\", \"value\": \"RHSA-2026:36834: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)\"}], \"x_adpType\": \"supplier\", \"datePublic\": \"2026-06-15T00:00:00.000Z\", \"references\": [{\"url\": \"https://access.redhat.com/security/cve/CVE-2026-52720\", \"tags\": [\"vdb-entry\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=2486731\", \"name\": \"RHBZ#2486731\", \"tags\": [\"issue-tracking\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-52720.json\", \"tags\": [\"x_sadp-csaf-vex\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:36749\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:37130\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:36834\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}], \"workarounds\": [{\"lang\": \"en\", \"value\": \"Red Hat is not aware of a practical temporary workaround that fully mitigates this issue or meets Red Hat Product Security\u0027s standards for usability, deployment, applicability, or stability. Customers are advised to apply the relevant security updates if they become available.\"}], \"x_generator\": {\"engine\": \"sadp-cli 1.0.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"A heap buffer overflow vulnerability was found in GStreamer\u0027s librfb (RFB/VNC client). The rectangle bounds check incorrectly validates area rather than individual dimensions, allowing a malicious VNC server to send a rectangle that extends beyond the framebuffer. A remote attacker could set up a malicious VNC server and trick a user into connecting, resulting in an out-of-bounds heap write that could lead to code execution or a crash.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-122\", \"description\": \"Heap-based Buffer Overflow\"}]}], \"providerMetadata\": {\"orgId\": \"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\", \"shortName\": \"redhat-SADP\", \"dateUpdated\": \"2026-07-24T12:05:27.770Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-52720\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-06-15T19:55:56.765375Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-06-15T19:56:06.041Z\"}}], \"cna\": {\"title\": \"Gstreamer1-plugins-bad-free: gstreamer: heap buffer overflow via crafted vnc server rectangle in librfb\", \"credits\": [{\"lang\": \"en\", \"value\": \"Red Hat would like to thank JUNYI LIU for reporting this issue.\"}], \"metrics\": [{\"other\": {\"type\": \"Red Hat severity rating\", \"content\": {\"value\": \"Important\", \"namespace\": \"https://access.redhat.com/security/updates/classification/\"}}}, {\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 8.8, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"REQUIRED\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"HIGH\"}}], \"affected\": [{\"cpes\": [\"cpe:/o:redhat:enterprise_linux:10.2\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Enterprise Linux 10\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"0:1.26.7-2.el10_2.4\", \"lessThan\": \"*\", \"versionType\": \"rpm\"}], \"packageName\": \"gstreamer1-plugins-bad-free\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:enterprise_linux:8::appstream\", \"cpe:/a:redhat:enterprise_linux:8::crb\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Enterprise Linux 8\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"0:1.16.1-8.el8_10\", \"lessThan\": \"*\", \"versionType\": \"rpm\"}], \"packageName\": \"gstreamer1-plugins-bad-free\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:rhel_aus:8.4::appstream\", \"cpe:/a:redhat:rhel_eus_long_life:8.4::appstream\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"0:1.16.1-4.el8_4.2\", \"lessThan\": \"*\", \"versionType\": \"rpm\"}], \"packageName\": \"gstreamer1-plugins-bad-free\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:rhel_aus:8.4::appstream\", \"cpe:/a:redhat:rhel_eus_long_life:8.4::appstream\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"0:1.16.1-4.el8_4.2\", \"lessThan\": \"*\", \"versionType\": \"rpm\"}], \"packageName\": \"gstreamer1-plugins-bad-free\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:rhel_aus:8.6::appstream\", \"cpe:/a:redhat:rhel_eus_long_life:8.6::appstream\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"0:1.16.1-4.el8_6.2\", \"lessThan\": \"*\", \"versionType\": \"rpm\"}], \"packageName\": \"gstreamer1-plugins-bad-free\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:rhel_aus:8.6::appstream\", \"cpe:/a:redhat:rhel_eus_long_life:8.6::appstream\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"0:1.16.1-4.el8_6.2\", \"lessThan\": \"*\", \"versionType\": \"rpm\"}], \"packageName\": \"gstreamer1-plugins-bad-free\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:enterprise_linux:9::appstream\", \"cpe:/a:redhat:enterprise_linux:9::crb\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Enterprise Linux 9\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"0:1.22.12-7.el9_8.1\", \"lessThan\": \"*\", \"versionType\": \"rpm\"}], \"packageName\": \"gstreamer1-plugins-bad-free\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:rhel_e4s:9.2::appstream\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"0:1.18.4-9.el9_2.3\", \"lessThan\": \"*\", \"versionType\": \"rpm\"}], \"packageName\": \"gstreamer1-plugins-bad-free\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:rhel_e4s:9.4::appstream\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"0:1.22.1-6.el9_4.4\", \"lessThan\": \"*\", \"versionType\": \"rpm\"}], \"packageName\": \"gstreamer1-plugins-bad-free\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:rhel_eus:9.6::appstream\", \"cpe:/a:redhat:rhel_eus:9.6::crb\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Enterprise Linux 9.6 Extended Update Support\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"0:1.22.12-5.el9_6.4\", \"lessThan\": \"*\", \"versionType\": \"rpm\"}], \"packageName\": \"gstreamer1-plugins-bad-free\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/o:redhat:enterprise_linux:6\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Enterprise Linux 6\", \"packageName\": \"gstreamer-plugins-bad-free\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"unknown\"}, {\"cpes\": [\"cpe:/o:redhat:enterprise_linux:7\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Enterprise Linux 7\", \"packageName\": \"gstreamer1-plugins-bad-free\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/o:redhat:enterprise_linux:7\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Enterprise Linux 7\", \"packageName\": \"gstreamer-plugins-bad-free\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"affected\"}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2026-05-19T00:00:00.000Z\", \"value\": \"Reported to Red Hat.\"}, {\"lang\": \"en\", \"time\": \"2026-06-15T00:00:00.000Z\", \"value\": \"Made public.\"}], \"datePublic\": \"2026-06-15T00:00:00.000Z\", \"references\": [{\"url\": \"https://access.redhat.com/errata/RHSA-2026:36749\", \"name\": \"RHSA-2026:36749\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:36834\", \"name\": \"RHSA-2026:36834\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:37130\", \"name\": \"RHSA-2026:37130\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:47069\", \"name\": \"RHSA-2026:47069\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:47070\", \"name\": \"RHSA-2026:47070\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:47071\", \"name\": \"RHSA-2026:47071\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:47075\", \"name\": \"RHSA-2026:47075\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:47076\", \"name\": \"RHSA-2026:47076\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/security/cve/CVE-2026-52720\", \"tags\": [\"vdb-entry\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=2486731\", \"name\": \"RHBZ#2486731\", \"tags\": [\"issue-tracking\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5105\"}], \"workarounds\": [{\"lang\": \"en\", \"value\": \"Red Hat is not aware of a practical temporary workaround that fully mitigates this issue or meets Red Hat Product Security\u0027s standards for usability, deployment, applicability, or stability. Customers are advised to apply the relevant security updates if they become available.\"}], \"x_generator\": {\"engine\": \"cvelib 1.8.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"A heap buffer overflow vulnerability was found in GStreamer\u0027s librfb (RFB/VNC client). The rectangle bounds check incorrectly validates area rather than individual dimensions, allowing a malicious VNC server to send a rectangle that extends beyond the framebuffer. A remote attacker could set up a malicious VNC server and trick a user into connecting, resulting in an out-of-bounds heap write that could lead to code execution or a crash.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-122\", \"description\": \"Heap-based Buffer Overflow\"}]}], \"providerMetadata\": {\"orgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"shortName\": \"redhat\", \"dateUpdated\": \"2026-07-28T16:27:34.590Z\"}, \"x_redhatCweChain\": \"CWE-122: Heap-based Buffer Overflow\"}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-52720\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-07-28T16:27:34.590Z\", \"dateReserved\": \"2026-06-08T11:07:26.008Z\", \"assignerOrgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"datePublished\": \"2026-06-15T19:15:19.808Z\", \"assignerShortName\": \"redhat\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.