{"id":"CVE-2026-28224","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-28224","generatedAt":"2026-10-28T04:36:48.909Z","title":"In versions prior to 5.0.4, 4.0.7 and 3.0.14, when the server receives an op_crypt_key_callback packet without prior authentication, the port_server_crypt_callback handler is not initialized, resulting in a null pointer dereference and server crash.","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 the server receives an op_crypt_key_callback packet without prior authentication, the port_server_crypt_callback handler is not initialized, resulting in a null pointer dereference and server crash. An unauthenticated attacker who knows only the server's 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":"2026-04-17T19:16:36.000Z","lastModified":"2026-10-26T21:10:00.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":8.2,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H"},"cwe":["CWE-476"],"affected":["firebirdsql/firebird"],"epss":{"score":0.00465,"percentile":0.40073,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.46%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14","tags":["Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7","tags":["Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4","tags":["Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-xrcw-wpjx-pr95","tags":["Exploit","Vendor Advisory"],"source":"security-advisories@github.com"},{"url":"https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-xrcw-wpjx-pr95","tags":["Exploit","Vendor Advisory"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-28224","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}