{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "2.x"
              },
              {
                "last_affected": "2.4.4"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "0079e56d8b6640c354457be42090617431f5c6bc"
            }
          ],
          "repo": "https://github.com/FastCGI-Archives/fcgi2",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "12ae40e58f6b1d8325408ff6765894f09994f5a9"
            }
          ],
          "repo": "https://github.com/fastcgi-archives/fcgi2",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "FastCGI fcgi2 (aka fcgi) 2.x through 2.4.4 has an integer overflow (and resultant heap-based buffer overflow) via crafted nameLen or valueLen values in data to the IPC socket. This occurs in ReadParams in fcgiapp.c.",
  "id": "CVE-2025-23016",
  "modified": "2026-04-01T23:09:05.515146823Z",
  "published": "2025-01-10T12:15:25.480Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/FastCGI-Archives/fcgi2/releases/tag/2.4.5"
    },
    {
      "type": "WEB",
      "url": "https://www.synacktiv.com/en/publications/cve-2025-23016-exploiting-the-fastcgi-library"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2025/04/23/4"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00009.html"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/FastCGI-Archives/fcgi2/issues/67"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}