CVE-2026-33337

{"id": "CVE-2026-33337", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-33337", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-04-17T19:21:08.979325Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "FirebirdSQL", "product": "firebird", "versions": [{"status": "affected", "version": ">= 3.0.0, < 3.0.14"}, {"status": "affected", "version": ">= 4.0.0, < 4.0.7"}, {"status": "affected", "version": ">= 5.0.0, < 5.0.4"}]}]}], "published": "2026-04-17T19:16:36.223", "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-89mq-229g-x47p", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-120"}, {"lang": "en", "value": "CWE-502"}]}], "descriptions": [{"lang": "en", "value": "Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, when deserializing a slice packet, the xdr_datum() function does not validate that a cstring length conforms to the slice descriptor bounds, allowing a cstring longer than the allocated buffer to overflow it. An unauthenticated attacker can exploit this by sending a crafted packet to the server, potentially causing a crash or other security impact. This issue has been fixed in versions 5.0.4, 4.0.7 and 3.0.14."}, {"lang": "es", "value": "Firebird es un sistema de gesti\u00f3n de base de datos relacional de c\u00f3digo abierto. En versiones anteriores a la 5.0.4, 4.0.7 y 3.0.14, al deserializar un paquete de segmento, la funci\u00f3n xdr_datum() no valida que la longitud de una cstring se ajuste a los l\u00edmites del descriptor de segmento, permitiendo que una cstring m\u00e1s larga que el b\u00fafer asignado lo desborde. Un atacante no autenticado puede explotar esto enviando un paquete manipulado al servidor, lo que podr\u00eda causar un fallo u otro impacto en la seguridad. Este problema ha sido solucionado en las versiones 5.0.4, 4.0.7 y 3.0.14."}], "lastModified": "2026-10-26T21:10:00.170", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:firebirdsql:firebird:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9A79C5C5-09BC-4F38-8B00-F643818CC87D", "versionEndExcluding": "3.0.14", "versionStartIncluding": "3.0.0"}, {"criteria": "cpe:2.3:a:firebirdsql:firebird:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A4BC24D2-FBF7-4308-9914-6079DBDF88FA", "versionEndExcluding": "4.0.7", "versionStartIncluding": "4.0.0"}, {"criteria": "cpe:2.3:a:firebirdsql:firebird:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "938978A3-90BE-4223-BDFC-5310A7C78D9B", "versionEndExcluding": "5.0.4", "versionStartIncluding": "5.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}