CVEvulnerability
CVE-2025-24975
8.8 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2025-08-15
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.1 HIGH — CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
- CVSS 3.1 ([email protected])
- 8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-754
Description
Firebird is a relational database. Prior to snapshot versions 4.0.6.3183, 5.0.2.1610, and 6.0.0.609, Firebird is vulnerable if ExtConnPoolSize is not set equal to 0. If connections stored in ExtConnPool are not verified for presence and suitability of the CryptCallback interface is used when created versus what is available could result in a segfault in the server process. Encrypted databases, accessed by execute statement on external, may be accessed later by an attachment missing a key to that database. In a case when execute statement are chained, segfault may happen. Additionally, the segfault may affect unencrypted databases. This issue has been patched in snapshot versions 4.0.6.3183, 5.0.2.1610, and 6.0.0.609 and point releases 4.0.6 and 5.0.2. A workaround for this issue involves setting ExtConnPoolSize equal to 0 in firebird.conf.
Affected configurations
• firebirdsql firebird (>= 4.0.0 < 4.0.6)
• firebirdsql firebird (>= 5.0.0 < 5.0.2)
Related
Weakness · CWE (1)
- CWE-754 Improper Check for Unusual or Exceptional Conditions weakness
References
- https://github.com/FirebirdSQL/firebird/commit/658abd20449f72097fbbce57e8e6ae42ff837fb6 Patch
- https://github.com/FirebirdSQL/firebird/issues/8429 Issue Tracking
- https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-fx9r-rj68-7p69 Mitigation, Vendor Advisory
- https://www.vicarius.io/vsociety/posts/cve-2025-24975-detect-vulnerable-firebird Exploit, Third Party Advisory
- https://www.vicarius.io/vsociety/posts/cve-2025-24975-mitigate-firebird-vulnerability Exploit, Third Party Advisory