FKIE_CVE-2026-25749

Vulnerability from fkie_nvd - Published: 2026-02-06 23:15 - Updated: 2026-02-06 23:15
Severity ?
6.6 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H
Summary
Vim is an open source, command line text editor. Prior to version 9.1.2132, a heap buffer overflow vulnerability exists in Vim's tag file resolution logic when processing the 'helpfile' option. The vulnerability is located in the get_tagfname() function in src/tag.c. When processing help file tags, Vim copies the user-controlled 'helpfile' option value into a fixed-size heap buffer of MAXPATHL + 1 bytes (typically 4097 bytes) using an unsafe STRCPY() operation without any bounds checking. This issue has been patched in version 9.1.2132.
References
security-advisories@github.comhttps://github.com/vim/vim/commit/0714b15940b245108e6e9d7aa2260dd849a26fa9
security-advisories@github.comhttps://github.com/vim/vim/releases/tag/v9.1.2132
security-advisories@github.comhttps://github.com/vim/vim/security/advisories/GHSA-5w93-4g67-mm43
Impacted products
Vendor Product Version
To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Vim is an open source, command line text editor. Prior to version 9.1.2132, a heap buffer overflow vulnerability exists in Vim\u0027s tag file resolution logic when processing the \u0027helpfile\u0027 option. The vulnerability is located in the get_tagfname() function in src/tag.c. When processing help file tags, Vim copies the user-controlled \u0027helpfile\u0027 option value into a fixed-size heap buffer of MAXPATHL + 1 bytes (typically 4097 bytes) using an unsafe STRCPY() operation without any bounds checking. This issue has been patched in version 9.1.2132."
    }
  ],
  "id": "CVE-2026-25749",
  "lastModified": "2026-02-06T23:15:54.230",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 6.6,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.3,
        "impactScore": 5.2,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-02-06T23:15:54.230",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/vim/vim/commit/0714b15940b245108e6e9d7aa2260dd849a26fa9"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/vim/vim/releases/tag/v9.1.2132"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/vim/vim/security/advisories/GHSA-5w93-4g67-mm43"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-122"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}


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