# CVE-2026-28212

> Vulnerability · severity: **HIGH** (CVSS 7.5).

## Description

Firebird is an open-source relational database management system. In versions prior to 6.0.0, 5.0.4, 4.0.7 and 3.0.14, when processing an op_slice network packet, the server passes an unprepared structure containing a null pointer to the SDL_info() function, resulting in a null pointer dereference and server crash. An unauthenticated attacker can trigger this by sending a crafted packet to the server port. This issue has been fixed in versions 6.0.0, 5.0.4, 4.0.7 and 3.0.14.

## Key facts

- **CVE ID:** CVE-2026-28212
- **Published:** 2026-04-17
- **CVSS severity:** HIGH
- **CVSS base score:** 7.5
- **CWE codes:** CWE-476

## Affected products

- `firebirdsql:firebird`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-28212

## Citation

> AI Analytics. CVE-2026-28212. Retrieved 2026-07-23 from https://api.ai-analytics.org/cve/CVE-2026-28212. Derived from NIST NVD. Licensed CC0.

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