CVE-2026-34232
Fixed in a distro release EPSS <1%CVSS 7.5
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.
Products: firebirdsql firebird
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 12 | firebird3.0 | no fix |
| Debian 13 | firebird3.0 | no fix |
| Debian 13 | firebird4.0 | no fix |
| Debian 14 | firebird3.0 | 3.0.14.ds7-1 |
| Debian 14 | firebird4.0 | 4.0.7.3271.ds6-1 |
| Ubuntu 18.04 LTS | firebird3.0 | no fix |
| Ubuntu 20.04 LTS | firebird3.0 | no fix |
| Ubuntu 22.04 LTS | firebird3.0 | no fix |
| Ubuntu 24.04 LTS | firebird3.0 | no fix |
| Ubuntu 25.10 | firebird3.0 | no fix |
| Ubuntu 25.10 | firebird4.0 | no fix |
| Ubuntu 26.04 LTS | firebird3.0 | no fix |
| Ubuntu 26.04 LTS | firebird4.0 | no fix |
| Ubuntu 26.10 | firebird3.0 | no fix |
| Ubuntu 26.10 | firebird4.0 | no fix |