{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:firebirdsql:firebird:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "3.0.0"
              },
              {
                "fixed": "3.0.14"
              },
              {
                "introduced": "4.0.0"
              },
              {
                "fixed": "4.0.7"
              },
              {
                "introduced": "5.0.0"
              },
              {
                "fixed": "5.0.4"
              }
            ],
            "source": [
              "CPE_RANGE",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "1767a517f9c99ec97160cacb452fdcfd83dca9be"
            },
            {
              "fixed": "463bae029a4426deff7e9bb08a8317aaa398c7c7"
            },
            {
              "introduced": "141bb5491d24cb363f03c5a0786a32f73a1faa5b"
            },
            {
              "fixed": "26f6881c9eac77c5e3166d209682c0ebe8dd07c0"
            },
            {
              "introduced": "af1546f15fa871b313ebcc7df1fd2df3c396c616"
            },
            {
              "fixed": "f6d83a28c009ab039ea40ffdb4ccc58f190dfbe6"
            }
          ],
          "repo": "https://github.com/firebirdsql/firebird",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-g99w-prq5-29c6"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-369"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35215.json"
  },
  "details": "Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, the sdl_desc() function does not validate the length of a decoded SDL descriptor from a slice packet. A zero-length descriptor is later used to calculate the number of slice items, causing a division by zero. An unauthenticated attacker can exploit this by sending a crafted slice packet to crash the server. This issue has been fixed in versions 5.0.4, 4.0.7 and 3.0.14.",
  "id": "CVE-2026-35215",
  "modified": "2026-07-08T05:38:50.654898243Z",
  "published": "2026-04-17T18:59:23.663Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35215.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-g99w-prq5-29c6"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-35215"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Firebird: DoS via malicious slice descriptor in slice packet"
}