CVE-2026-28419 (GCVE-0-2026-28419)

Vulnerability from cvelistv5 – Published: 2026-02-27 22:02 – Updated: 2026-03-02 21:54
VLAI
Title
Vim has Heap-based Buffer Underflow in Emacs tags parsing
Summary
Vim is an open source, command line text editor. Prior to version 9.2.0075, a heap-based buffer underflow exists in Vim's Emacs-style tags file parsing logic. When processing a malformed tags file where a delimiter appears at the start of a line, Vim attempts to read memory immediately preceding the allocated buffer. Version 9.2.0075 fixes the issue.
Severity
5.3 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-02 21:54 UTC
CWE
  • CWE-124 - Buffer Underwrite ('Buffer Underflow')
  • CWE-125 - Out-of-bounds Read
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7910 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
vim vim Affected: < 9.2.0075
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2026-02-28T00:15:33.748Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/02/27/8"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-28419",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-02T21:54:21.226456Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-02T21:54:29.733Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "vim",
          "vendor": "vim",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 9.2.0075"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Vim is an open source, command line text editor. Prior to version 9.2.0075, a heap-based buffer underflow exists in Vim\u0027s Emacs-style tags file parsing logic. When processing a malformed tags file where a delimiter appears at the start of a line, Vim attempts to read memory immediately preceding the allocated buffer. Version 9.2.0075 fixes the issue."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "LOW",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-124",
              "description": "CWE-124: Buffer Underwrite (\u0027Buffer Underflow\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-125",
              "description": "CWE-125: Out-of-bounds Read",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-27T22:02:55.952Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/vim/vim/security/advisories/GHSA-xcc8-r6c5-hvwv",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/vim/vim/security/advisories/GHSA-xcc8-r6c5-hvwv"
        },
        {
          "name": "https://github.com/vim/vim/commit/9b7dfa2948c9e1e5e32a5812",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/vim/vim/commit/9b7dfa2948c9e1e5e32a5812"
        },
        {
          "name": "https://github.com/vim/vim/releases/tag/v9.2.0075",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/vim/vim/releases/tag/v9.2.0075"
        }
      ],
      "source": {
        "advisory": "GHSA-xcc8-r6c5-hvwv",
        "discovery": "UNKNOWN"
      },
      "title": "Vim has Heap-based Buffer Underflow in Emacs tags parsing"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-28419",
    "datePublished": "2026-02-27T22:02:55.952Z",
    "dateReserved": "2026-02-27T15:33:57.290Z",
    "dateUpdated": "2026-03-02T21:54:29.733Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-28419",
      "date": "2026-11-04",
      "epss": "0.00196",
      "percentile": "0.09372"
    },
    "microsoft_vex": {
      "current_release_date": "2026-03-10T01:36:50.000Z",
      "cve": "CVE-2026-28419",
      "id": "msrc_CVE-2026-28419",
      "initial_release_date": "2026-02-02T00:00:00.000Z",
      "product_status:fixed": "2",
      "product_status:known_affected": "2",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "Vim has Heap-based Buffer Underflow in Emacs tags parsing",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-28419.json",
      "version": "4"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "vim",
                "vendor": "vim",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 9.2.0075"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:vim:vim:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "9C5E9D69-5807-4FA4-839A-CCEC3E4D1208",
                    "versionEndExcluding": "9.2.0075",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Vim is an open source, command line text editor. Prior to version 9.2.0075, a heap-based buffer underflow exists in Vim\u0027s Emacs-style tags file parsing logic. When processing a malformed tags file where a delimiter appears at the start of a line, Vim attempts to read memory immediately preceding the allocated buffer. Version 9.2.0075 fixes the issue."
          },
          {
            "lang": "es",
            "value": "Vim es un editor de texto de c\u00f3digo abierto y de l\u00ednea de comandos. Antes de la versi\u00f3n 9.2.0075, hay un desbordamiento negativo de b\u00fafer basado en el mont\u00f3n en la l\u00f3gica de an\u00e1lisis de archivos de etiquetas estilo Emacs de Vim. Al procesar un archivo de etiquetas malformado donde un delimitador aparece al inicio de una l\u00ednea, Vim intenta leer memoria inmediatamente anterior al b\u00fafer asignado. La versi\u00f3n 9.2.0075 corrige el problema."
          }
        ],
        "id": "CVE-2026-28419",
        "lastModified": "2026-06-17T10:28:35.297",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "LOW",
                "baseScore": 5.3,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "LOW",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.4,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 6.6,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "LOW",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 4.7,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-28419",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-02T21:54:21.226456Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-02-27T22:16:25.163",
        "references": [
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Patch"
            ],
            "url": "https://github.com/vim/vim/commit/9b7dfa2948c9e1e5e32a5812"
          },
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Product"
            ],
            "url": "https://github.com/vim/vim/releases/tag/v9.2.0075"
          },
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Patch",
              "Vendor Advisory"
            ],
            "url": "https://github.com/vim/vim/security/advisories/GHSA-xcc8-r6c5-hvwv"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Mailing List",
              "Patch",
              "Third Party Advisory"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2026/02/27/8"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-124"
              },
              {
                "lang": "en",
                "value": "CWE-125"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-09-01T12:00:40+00:00",
      "cve": "CVE-2026-28419",
      "id": "CVE-2026-28419",
      "initial_release_date": "2026-02-27T22:02:55.952000+00:00",
      "product_status:known_affected": "34",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "vim: Vim: Information disclosure and denial of service via malformed tags file",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-28419.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-04-08T23:26:30Z",
      "cve": "CVE-2026-28419",
      "id": "CVE-2026-28419",
      "initial_release_date": "2026-03-03T00:24:39Z",
      "product_status:known_affected": "140",
      "product_status:recommended": "117",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-28419",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-28419.json",
      "version": "6"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "providerMetadata": {
              "dateUpdated": "2026-02-28T00:15:33.748Z",
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
              "shortName": "CVE"
            },
            "references": [
              {
                "url": "http://www.openwall.com/lists/oss-security/2026/02/27/8"
              }
            ],
            "title": "CVE Program Container"
          },
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-28419",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-03-02T21:54:21.226456Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-03-02T21:54:26.613Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "vim",
              "vendor": "vim",
              "versions": [
                {
                  "status": "affected",
                  "version": "\u003c 9.2.0075"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "Vim is an open source, command line text editor. Prior to version 9.2.0075, a heap-based buffer underflow exists in Vim\u0027s Emacs-style tags file parsing logic. When processing a malformed tags file where a delimiter appears at the start of a line, Vim attempts to read memory immediately preceding the allocated buffer. Version 9.2.0075 fixes the issue."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "LOW",
                "baseScore": 5.3,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "LOW",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L",
                "version": "3.1"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-124",
                  "description": "CWE-124: Buffer Underwrite (\u0027Buffer Underflow\u0027)",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            },
            {
              "descriptions": [
                {
                  "cweId": "CWE-125",
                  "description": "CWE-125: Out-of-bounds Read",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-02-27T22:02:55.952Z",
            "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
            "shortName": "GitHub_M"
          },
          "references": [
            {
              "name": "https://github.com/vim/vim/security/advisories/GHSA-xcc8-r6c5-hvwv",
              "tags": [
                "x_refsource_CONFIRM"
              ],
              "url": "https://github.com/vim/vim/security/advisories/GHSA-xcc8-r6c5-hvwv"
            },
            {
              "name": "https://github.com/vim/vim/commit/9b7dfa2948c9e1e5e32a5812",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/vim/vim/commit/9b7dfa2948c9e1e5e32a5812"
            },
            {
              "name": "https://github.com/vim/vim/releases/tag/v9.2.0075",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/vim/vim/releases/tag/v9.2.0075"
            }
          ],
          "source": {
            "advisory": "GHSA-xcc8-r6c5-hvwv",
            "discovery": "UNKNOWN"
          },
          "title": "Vim has Heap-based Buffer Underflow in Emacs tags parsing"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2026-28419",
        "datePublished": "2026-02-27T22:02:55.952Z",
        "dateReserved": "2026-02-27T15:33:57.290Z",
        "dateUpdated": "2026-03-02T21:54:29.733Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Loading timeline…




    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.