Description
Firebird is an open-source relational database management system. In versions FB3 of the client library placed incorrect data length values into XSQLDA fields when communicating with FB4 or higher servers, resulting in an information leak. This issue is fixed by upgrading to the FB4 client or higher.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| FirebirdSQL | firebird | < 4.0.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | firebird3.0 | 3.0.14.ds7-1 | — |
| Debian 13 | firebird3.0 | No fix yet | — |
| Debian 12 | firebird3.0 | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | firebird3.0 +1 | No fix yet | — |
| Ubuntu 26.04 LTS | firebird3.0 | No fix yet | — |
| Ubuntu 25.10 | firebird3.0 +1 | No fix yet | — |
| Ubuntu 24.04 LTS | firebird3.0 | No fix yet | — |
| Ubuntu 22.04 LTS | firebird3.0 | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | firebird3.0 | No fix yet | — |
| Ubuntu 18.04 LTS | firebird3.0 | No fix yet | — |
Advisories 1
- WID-SEC-2026-1171 Firebird: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 17, 2026