CVE-2026-34232

high

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.

References

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

https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4

https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7

https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14

Details

Source: Mitre, NVD

Published: 2026-04-17

Updated: 2026-04-17

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity: High