{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "vim",
          "vendor": "vim",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 9.1.2132"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "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"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-122",
              "description": "CWE-122: Heap-based Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-06T22:43:38.630Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/vim/vim/security/advisories/GHSA-5w93-4g67-mm43",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/vim/vim/security/advisories/GHSA-5w93-4g67-mm43"
        },
        {
          "name": "https://github.com/vim/vim/commit/0714b15940b245108e6e9d7aa2260dd849a26fa9",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/vim/vim/commit/0714b15940b245108e6e9d7aa2260dd849a26fa9"
        },
        {
          "name": "https://github.com/vim/vim/releases/tag/v9.1.2132",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/vim/vim/releases/tag/v9.1.2132"
        }
      ],
      "source": {
        "advisory": "GHSA-5w93-4g67-mm43",
        "discovery": "UNKNOWN"
      },
      "title": "Heap Overflow in Vim"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-25749",
    "datePublished": "2026-02-06T22:43:38.630Z",
    "dateReserved": "2026-02-05T18:35:52.356Z",
    "dateUpdated": "2026-02-06T22:43:38.630Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-25749\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-02-06T23:15:54.230\",\"lastModified\":\"2026-02-06T23:15:54.230\",\"vulnStatus\":\"Received\",\"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.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H\",\"baseScore\":6.6,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.3,\"impactScore\":5.2}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-122\"}]}],\"references\":[{\"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\",\"source\":\"security-advisories@github.com\"}]}}"
  }
}