CVE-2025-24975

HIGH EPSS 37.5%
Published Aug 15, 202510mo ago · Modified Jun 17, 20262w ago
8.8 CVSS 3.1
High
Find Similar
Published Aug 15, 2025 10mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
8.8
Exploitability
2.8
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
37.5% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-754

Affected Products 2

VendorProductVersionRange
firebirdsqlfirebird*≥4.0.0  –  <4.0.6
firebirdsqlfirebird*≥5.0.0  –  <5.0.2

References 5

  • github.com https://github.com/FirebirdSQL/firebird/commit/658abd20449f72097fbbce57e8e6ae42ff837fb6
    Patch
  • github.com https://github.com/FirebirdSQL/firebird/issues/8429
    Issue Tracking
  • github.com https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-fx9r-rj68-7p69
    MitigationVendor Advisory
  • vicarius.io https://www.vicarius.io/vsociety/posts/cve-2025-24975-detect-vulnerable-firebird
    ExploitThird Party Advisory
  • vicarius.io https://www.vicarius.io/vsociety/posts/cve-2025-24975-mitigate-firebird-vulnerability
    ExploitThird Party Advisory

Remediation

  • github.com https://github.com/FirebirdSQL/firebird/commit/658abd20449f72097fbbce57e8e6ae42ff837fb6
    Patch