What is CVE-2026-34232?

CVE-2026-34232 is a high-severity vulnerability in Firebirdsql Firebird, classified under CWE-228. CVSS score: 7.5/10. Published 2026-04-17.

How severe is CVE-2026-34232?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Firebirdsql Firebird

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…

EPSS: 0.002 (37.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Firebirdsql Firebird — versions >= 3.0.0, < 3.0.14, >= 4.0.0, < 4.0.7, >= 5.0.0, < 5.0.4

Weakness classification (CWE)

CWE-228

References

https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-7jq3-6j3c-5cm2 (x_refsource_CONFIRM)
https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14 (x_refsource_MISC)
https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7 (x_refsource_MISC)
https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-34232?: CVE-2026-34232 is a high-severity vulnerability in Firebirdsql Firebird, classified under CWE-228. CVSS score: 7.5/10. Published 2026-04-17.
How severe is CVE-2026-34232?: High severity. CVSS v3 base score is 7.5 out of 10.