# CVE-2026-34232

## Summary

- **CVE ID:** CVE-2026-34232
- **Severity:** HIGH
- **CVSS Score:** 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
- **CWE:** CWE-228
- **Published:** Apr 17, 2026
- **Last Modified:** Apr 20, 2026

## 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.

## Affected Products

- FirebirdSQL — firebird (>= 3.0.0, < 3.0.14)
- FirebirdSQL — firebird (>= 4.0.0, < 4.0.7)
- FirebirdSQL — firebird (>= 5.0.0, < 5.0.4)

## References

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

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.47%
- **EPSS Percentile:** 39.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-12._