CVE-2026-35215

HIGH7.5

Firebird: DoS via malicious slice descriptor in slice packet

Published Apr 17, 2026

Modified 2 weeks ago

Details

Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, the sdl_desc() function does not validate the length of a decoded SDL descriptor from a slice packet. A zero-length descriptor is later used to calculate the number of slice items, causing a division by zero. An unauthenticated attacker can exploit this by sending a crafted slice packet to crash the server. This issue has been fixed in versions 5.0.4, 4.0.7 and 3.0.14.

References

WEB

https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14

WEB

https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7

WEB

https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4

WEB

https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-g99w-prq5-29c6

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-35215

CVSS Analysis