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."}], "lastModified": "2026-06-17T10:37:20.620", "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"}