Description

Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, when deserializing a slice packet, the xdr_datum() function does not validate that a cstring length conforms to the slice descriptor bounds, allowing a cstring longer than the allocated buffer to overflow it. An unauthenticated attacker can exploit this by sending a crafted packet to the server, potentially causing a crash or other security impact. This issue has been fixed in versions 5.0.4, 4.0.7 and 3.0.14.

INFO

Published Date :

2026-04-17T18:48:47.953Z

Last Modified :

2026-04-17T19:21:17.132Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-33337 vulnerability.

Vendors Products
Firebirdsql
  • Firebird
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-33337.

URL Resource
https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14 cve-icon cve-icon
https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7 cve-icon cve-icon
https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4 cve-icon cve-icon
https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-89mq-229g-x47p cve-icon cve-icon
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CVSS Vulnerability Scoring System

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