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.

• CWE-228

• https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14Release Notes
• https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7Release Notes
• https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4Release Notes
• https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-7jq3-6j3c-5cm2Exploit, Vendor Advisory

Published

Apr 17, 2026

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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