CVE-2026-84131 (GCVE-0-2026-84131)

Vulnerability from cvelistv5 – Published: 2026-09-01 12:18 – Updated: 2026-09-02 03:55
VLAI
Title
Privilege escalation due to invalid pointer in the Graphics component
Summary
Privilege escalation due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.
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 · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 00:00 UTC
CWE
  • CWE-763 - Release of Invalid Pointer or Reference
Assigner
References
Impacted products
Vendor Product Version CPE status
Mozilla Firefox Unaffected: 115.40 , ≤ 115.* (rpm)
Unaffected: 140.15 , ≤ 140.* (rpm)
Unaffected: 153.2 , ≤ 153.* (rpm)
Unaffected: 155 , ≤ * (rpm)
guessed Create a notification for this product.
Mozilla Thunderbird Unaffected: 140.15 , ≤ 140.* (rpm)
Unaffected: 153.2 , ≤ 153.* (rpm)
Unaffected: 155 , ≤ * (rpm)
guessed Create a notification for this product.
Credits
navapon
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "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"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-84131",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-01T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-763",
                "description": "CWE-763 Release of Invalid Pointer or Reference",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-02T03:55:25.128Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Firefox",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThanOrEqual": "115.*",
              "status": "unaffected",
              "version": "115.40",
              "versionType": "rpm"
            },
            {
              "lessThanOrEqual": "140.*",
              "status": "unaffected",
              "version": "140.15",
              "versionType": "rpm"
            },
            {
              "lessThanOrEqual": "153.*",
              "status": "unaffected",
              "version": "153.2",
              "versionType": "rpm"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "155",
              "versionType": "rpm"
            }
          ]
        },
        {
          "product": "Thunderbird",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThanOrEqual": "140.*",
              "status": "unaffected",
              "version": "140.15",
              "versionType": "rpm"
            },
            {
              "lessThanOrEqual": "153.*",
              "status": "unaffected",
              "version": "153.2",
              "versionType": "rpm"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "155",
              "versionType": "rpm"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "navapon"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Privilege escalation due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2."
            }
          ],
          "value": "Privilege escalation due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-01T21:44:08.906Z",
        "orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
        "shortName": "mozilla"
      },
      "references": [
        {
          "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2060008"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-82/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-83/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-84/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-85/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-86/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-87/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-88/"
        }
      ],
      "title": "Privilege escalation due to invalid pointer in the Graphics component"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
    "assignerShortName": "mozilla",
    "cveId": "CVE-2026-84131",
    "datePublished": "2026-09-01T12:18:42.768Z",
    "dateReserved": "2026-09-01T07:25:34.092Z",
    "dateUpdated": "2026-09-02T03:55:25.128Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-84131",
      "date": "2026-10-02",
      "epss": "0.00335",
      "percentile": "0.24608"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "Firefox",
                "vendor": "Mozilla",
                "versions": [
                  {
                    "lessThanOrEqual": "115.*",
                    "status": "unaffected",
                    "version": "115.40",
                    "versionType": "rpm"
                  },
                  {
                    "lessThanOrEqual": "140.*",
                    "status": "unaffected",
                    "version": "140.15",
                    "versionType": "rpm"
                  },
                  {
                    "lessThanOrEqual": "153.*",
                    "status": "unaffected",
                    "version": "153.2",
                    "versionType": "rpm"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "155",
                    "versionType": "rpm"
                  }
                ]
              },
              {
                "product": "Thunderbird",
                "vendor": "Mozilla",
                "versions": [
                  {
                    "lessThanOrEqual": "140.*",
                    "status": "unaffected",
                    "version": "140.15",
                    "versionType": "rpm"
                  },
                  {
                    "lessThanOrEqual": "153.*",
                    "status": "unaffected",
                    "version": "153.2",
                    "versionType": "rpm"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "155",
                    "versionType": "rpm"
                  }
                ]
              }
            ],
            "source": "security@mozilla.org"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "B84FE134-AC5B-4FF4-9F3C-704D92475BD1",
                    "versionEndExcluding": "115.40.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "933C120C-6E83-48E4-8002-38E2C93D8E47",
                    "versionEndExcluding": "140.15.0",
                    "versionStartIncluding": "116.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "BAC56AB7-FB63-4A76-BFBD-4C0122F2A93C",
                    "versionEndExcluding": "153.2.0",
                    "versionStartIncluding": "141.0.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "56769A1A-4A97-4814-8963-24B7AFD7E44F",
                    "versionEndExcluding": "155.0.0",
                    "versionStartIncluding": "154.0.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "EC44CB46-89FD-40DC-92D1-F865A0521D06",
                    "versionEndExcluding": "140.15.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "B217A29A-45B5-407C-9B4B-96CF6EB0838E",
                    "versionEndExcluding": "153.2.0",
                    "versionStartIncluding": "141.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "C6AB910B-074A-42F7-A3C7-B7E822011D92",
                    "versionEndExcluding": "155.0",
                    "versionStartIncluding": "154.0",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Privilege escalation due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2."
          }
        ],
        "id": "CVE-2026-84131",
        "lastModified": "2026-09-03T12:53:35.473",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "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"
              },
              "exploitabilityScore": 2.8,
              "impactScore": 5.9,
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-84131",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-01T00:00:00+00:00",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-09-01T13:20:07.123",
        "references": [
          {
            "source": "security@mozilla.org",
            "tags": [
              "Permissions Required"
            ],
            "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2060008"
          },
          {
            "source": "security@mozilla.org",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://www.mozilla.org/security/advisories/mfsa2026-82/"
          },
          {
            "source": "security@mozilla.org",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://www.mozilla.org/security/advisories/mfsa2026-83/"
          },
          {
            "source": "security@mozilla.org",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://www.mozilla.org/security/advisories/mfsa2026-84/"
          },
          {
            "source": "security@mozilla.org",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://www.mozilla.org/security/advisories/mfsa2026-85/"
          },
          {
            "source": "security@mozilla.org",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://www.mozilla.org/security/advisories/mfsa2026-86/"
          },
          {
            "source": "security@mozilla.org",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://www.mozilla.org/security/advisories/mfsa2026-87/"
          },
          {
            "source": "security@mozilla.org",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://www.mozilla.org/security/advisories/mfsa2026-88/"
          }
        ],
        "sourceIdentifier": "security@mozilla.org",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-763"
              }
            ],
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-09-30T23:39:13+00:00",
      "cve": "CVE-2026-84131",
      "id": "CVE-2026-84131",
      "initial_release_date": "2026-09-01T12:18:42.768000+00:00",
      "product_status:fixed": "82",
      "product_status:known_affected": "10",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "firefox: Privilege escalation due to invalid pointer in the Graphics component",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-84131.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-09-23T23:44:04Z",
      "cve": "CVE-2026-84131",
      "id": "CVE-2026-84131",
      "initial_release_date": "2026-09-02T01:00:31Z",
      "product_status:known_affected": "80",
      "product_status:recommended": "109",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-84131",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-84131.json",
      "version": "11"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "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"
                }
              },
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-84131",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-09-01T13:45:00.578487Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-763",
                    "description": "CWE-763 Release of Invalid Pointer or Reference",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-09-01T13:44:55.535Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "Firefox",
              "vendor": "Mozilla",
              "versions": [
                {
                  "lessThanOrEqual": "115.*",
                  "status": "unaffected",
                  "version": "115.40",
                  "versionType": "rpm"
                },
                {
                  "lessThanOrEqual": "140.*",
                  "status": "unaffected",
                  "version": "140.15",
                  "versionType": "rpm"
                },
                {
                  "lessThanOrEqual": "153.*",
                  "status": "unaffected",
                  "version": "153.2",
                  "versionType": "rpm"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "155",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "product": "Thunderbird",
              "vendor": "Mozilla",
              "versions": [
                {
                  "lessThanOrEqual": "140.*",
                  "status": "unaffected",
                  "version": "140.15",
                  "versionType": "rpm"
                },
                {
                  "lessThanOrEqual": "153.*",
                  "status": "unaffected",
                  "version": "153.2",
                  "versionType": "rpm"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "155",
                  "versionType": "rpm"
                }
              ]
            }
          ],
          "credits": [
            {
              "lang": "en",
              "value": "navapon"
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "Privilege escalation due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2."
                }
              ],
              "value": "Privilege escalation due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2."
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-09-01T21:44:08.906Z",
            "orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
            "shortName": "mozilla"
          },
          "references": [
            {
              "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2060008"
            },
            {
              "url": "https://www.mozilla.org/security/advisories/mfsa2026-82/"
            },
            {
              "url": "https://www.mozilla.org/security/advisories/mfsa2026-83/"
            },
            {
              "url": "https://www.mozilla.org/security/advisories/mfsa2026-84/"
            },
            {
              "url": "https://www.mozilla.org/security/advisories/mfsa2026-85/"
            },
            {
              "url": "https://www.mozilla.org/security/advisories/mfsa2026-86/"
            },
            {
              "url": "https://www.mozilla.org/security/advisories/mfsa2026-87/"
            },
            {
              "url": "https://www.mozilla.org/security/advisories/mfsa2026-88/"
            }
          ],
          "title": "Privilege escalation due to invalid pointer in the Graphics component"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
        "assignerShortName": "mozilla",
        "cveId": "CVE-2026-84131",
        "datePublished": "2026-09-01T12:18:42.768Z",
        "dateReserved": "2026-09-01T07:25:34.092Z",
        "dateUpdated": "2026-09-01T21:44:08.906Z",
        "state": "PUBLISHED"
      },
      "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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.