🛡️ CVE-2026-34232 on Debian — firebird3.0

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Distribution advisory

This page covers CVE-2026-34232 as tracked by Debian, for the package firebird3.0. The fix is available in version 3.0.14.ds7-1; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Weakness class

DEBIAN-CVE-2026-34232 is classified as CWE-228: Improper Handling of Syntactically Invalid Structure. The product does not handle or incorrectly handles input that is not syntactically well-formed with respect to the associated specification.

Affected software

DEBIAN-CVE-2026-34232 is recorded against 2 packages.

  • firebird3.0 (fixed in 3.0.14.ds7-1)
  • firebird4.0 (fixed in 4.0.7.3271.ds6-1)

Timeline and source

Published on 17 April 2026 and last revised on 4 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

security-tracker.debian.org (Advisory)

CVE-2026-34232 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-04-17
Updated 2026-08-12
Modified 2026-08-04
Fix URL N/A

Affected Packages

Software From version Fixed in
firebird3.0 3.0.14.ds7-1
firebird4.0 4.0.7.3271.ds6-1

Site Security Check

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DEBIAN-CVE-2026-34232 is rated CVSS 7.5 High. BotEraser scans your installation against known CVE records and tells you whether this vulnerability applies to the versions you actually run.

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