{
  "cveId": "CVE-2026-27890",
  "url": "https://patchblox.com/security/cve/CVE-2026-27890",
  "summary": "CVE-2026-27890 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-27890, released May 15, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "firebird3.0: Firebird is an open-source relational database management system",
  "description": "Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, when processing CNCT_specific_data segments during authentication, the server assumes segments arrive in strictly ascending order. If segments arrive out of order, the Array class\u0027s grow() method computes a negative size value, causing a SIGSEGV crash. An unauthenticated attacker who knows only the server\u0027s IP and port can exploit this to crash the server. This issue has been fixed in versions 5.0.4, 4.0.7 and 3.0.14.",
  "published": "2026-04-17T19:16:34Z",
  "severity": "high",
  "cvss": 8.2,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
  "epss": 0.00465,
  "epssPercentile": 0.40506,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "firebird3.0",
      "release": "Debian 14",
      "fixedVersion": "3.0.14.ds7-1",
      "fix": "DEBIAN-CVE-2026-27890",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-27890",
      "released": "2026-05-15T16:01:09Z"
    },
    {
      "platform": "linux",
      "product": "firebird4.0",
      "release": "Debian 14",
      "fixedVersion": "4.0.7.3271.ds6-1",
      "fix": "DEBIAN-CVE-2026-27890",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-27890",
      "released": "2026-05-15T16:01:09Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}