CVE-2026-34232

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.

Score

CVSS 3.1 7.5 High

Status

Analyzed - security-advisories@github.com

Published

2026-04-17

Last modified

2026-10-26

Weaknesses

CWE-228

Affected products

• Firebird (Firebirdsql)

References

• https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-7jq3-6j3c-5cm2
• 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