firebird3.0: Firebird is an open-source relational database management system
CVE-2026-33337 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-33337, released May 15, 2026. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| firebird3.0 · Debian 14 | 3.0.14.ds7-1 | DEBIAN-CVE-2026-33337 | May 15, 2026 |
| firebird4.0 · Debian 14 | 4.0.7.3271.ds6-1 | DEBIAN-CVE-2026-33337 | May 15, 2026 |
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