CVE-2026-34232
HIGHDescription
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.
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploit Intelligence
Low risk: more likely to be exploited than 38% of all known CVEs.
References
Related Vulnerabilities
Other CWE-228 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2018-5381 | Medium | 6.5 | 30% | - | Fix |
| CVE-2021-38443 | Medium | 6.6 | 2.1% | - | Fix |
| CVE-2020-27847 | Critical | 9.8 | 1.7% | - | Fix |
| CVE-2021-36199 | Medium | 5.3 | 1.0% | - | - |
| CVE-2026-42100 | High | 7.5 | 0.7% | - | - |
| CVE-2024-21612 | High | 7.5 | 0.5% | - | Fix |
Common questions
How do I fix CVE-2026-34232?
Upgrade firebird3.0 on debian unstable to 3.0.14.ds7-1 or later.
Is CVE-2026-34232 being actively exploited?
Not that we know of. CVE-2026-34232 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.47% is the estimated probability that it will be exploited in the next 30 days. That is higher than 38% of all scored CVEs.
How severe is CVE-2026-34232?
CVE-2026-34232 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2026-34232 affect?
Published advisories record a fix for firebird3.0 (Debian). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
Embed a live status badge for CVE-2026-34232
Markdown
[](https://tridentstack.com/cve/CVE-2026-34232)HTML
<a href="https://tridentstack.com/cve/CVE-2026-34232"><img src="https://tridentstack.com/cve/badge/CVE-2026-34232.svg" alt="CVE-2026-34232"></a>Find and fix vulnerabilities across your fleet
TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.
This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-27.