Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, the xdr_status_vector() function does not handle the isc_arg_cstring type when decoding an op_response packet, causing a server crash when one is encountered in the status vector. An unauthenticated attacker can exploit this by sending a crafted op_response packet to the server. This issue has been fixed in versions 5.0.4, 4.0.7 and 3.0.14.
History

Mon, 27 Apr 2026 14:30:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:firebirdsql:firebird:*:*:*:*:*:*:*:*

Mon, 20 Apr 2026 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 17 Apr 2026 21:15:00 +0000

Type Values Removed Values Added
First Time appeared Firebirdsql
Firebirdsql firebird
Vendors & Products Firebirdsql
Firebirdsql firebird

Fri, 17 Apr 2026 19:30:00 +0000

Type Values Removed Values Added
Description Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, the xdr_status_vector() function does not handle the isc_arg_cstring type when decoding an op_response packet, causing a server crash when one is encountered in the status vector. An unauthenticated attacker can exploit this by sending a crafted op_response packet to the server. This issue has been fixed in versions 5.0.4, 4.0.7 and 3.0.14.
Title Firebird: DoS via `op_response` packet from client
Weaknesses CWE-228
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-04-20T13:46:08.507Z

Reserved: 2026-03-26T16:22:29.034Z

Link: CVE-2026-34232

cve-icon Vulnrichment

Updated: 2026-04-20T13:45:00.757Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-17T20:16:34.977

Modified: 2026-04-27T14:27:50.007

Link: CVE-2026-34232

cve-icon Redhat

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