{"id":"CVE-2026-28212","state":"PUBLISHED","title":"Firebird has potential server crash via null pointer dereference when processing op_slice packet","description":"Firebird is an open-source relational database management system. In versions prior to 6.0.0, 5.0.4, 4.0.7 and 3.0.14, when processing an op_slice network packet, the server passes an unprepared structure containing a null pointer to the SDL_info() function, resulting in a null pointer dereference and server crash. An unauthenticated attacker can trigger this by sending a crafted packet to the server port. This issue has been fixed in versions 6.0.0, 5.0.4, 4.0.7 and 3.0.14.","publishedAt":"2026-04-17T18:05:25.854Z","updatedAt":"2026-04-20T13:46:08.904Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["FirebirdSQL firebird"],"affected":[{"vendor":"FirebirdSQL","product":"firebird","versions":[{"version":"< 3.0.14","status":"affected"},{"version":">= 4.0.0, < 4.0.7","status":"affected"},{"version":">= 5.0.0, < 5.0.4","status":"affected"}]}],"references":["https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-9884-9qm3-hqch","https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14","https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7","https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4"],"weaknesses":["CWE-476"],"ingestedAt":"2026-10-29T20:11:31.369Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/28xxx/CVE-2026-28212.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-28212","state":"PUBLISHED","datePublished":"2026-04-17T18:05:25.854Z","dateUpdated":"2026-04-20T13:46:08.904Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-02-25T15:28:40.649Z"},"containers":{"cna":{"title":"Firebird has potential server crash via null pointer dereference when processing op_slice packet","descriptions":[{"lang":"en","value":"Firebird is an open-source relational database management system. In versions prior to 6.0.0, 5.0.4, 4.0.7 and 3.0.14, when processing an op_slice network packet, the server passes an unprepared structure containing a null pointer to the SDL_info() function, resulting in a null pointer dereference and server crash. An unauthenticated attacker can trigger this by sending a crafted packet to the server port. This issue has been fixed in versions 6.0.0, 5.0.4, 4.0.7 and 3.0.14."}],"affected":[{"vendor":"FirebirdSQL","product":"firebird","versions":[{"version":"< 3.0.14","status":"affected"},{"version":">= 4.0.0, < 4.0.7","status":"affected"},{"version":">= 5.0.0, < 5.0.4","status":"affected"}]}],"references":[{"url":"https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-9884-9qm3-hqch","name":"https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-9884-9qm3-hqch","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14","name":"https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14","tags":["x_refsource_MISC"]},{"url":"https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7","name":"https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7","tags":["x_refsource_MISC"]},{"url":"https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4","name":"https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-476","lang":"en","description":"CWE-476: NULL Pointer Dereference","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-04-17T18:10:29.394Z"},"source":{"advisory":"GHSA-9884-9qm3-hqch","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-28212","role":"CISA Coordinator","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-04-20T13:44:29.423772Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-20T13:46:08.904Z"}}]}}}