CVE-2025-24975
Firebird Non-Authorized Access to Encrypted Database Using Execute Statement on External
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | High7.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L |
| NVDNVD · Analyzed | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.59% · top 52% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.
Weakness
Affected products
- affected < 6.0.0.609
- affected < 5.0.2.1610
- affected < 4.0.6.3183
References (5)
- https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-fx9r-rj68-7p69 (opens in a new tab)x_refsource_CONFIRM
- https://github.com/FirebirdSQL/firebird/issues/8429 (opens in a new tab)x_refsource_MISC
- https://github.com/FirebirdSQL/firebird/commit/658abd20449f72097fbbce57e8e6ae42ff837fb6 (opens in a new tab)x_refsource_MISC
- https://www.vicarius.io/vsociety/posts/cve-2025-24975-detect-vulnerable-firebird (opens in a new tab)
- https://www.vicarius.io/vsociety/posts/cve-2025-24975-mitigate-firebird-vulnerability (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2025-24975)Record last updated .