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CVE-2026-40342

CRITICAL

9.9

Description

Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, the external engine plugin loader concatenates a user-supplied engine name into a filesystem path without filtering path separators or .. components. An authenticated user with CREATE FUNCTION privileges can use a crafted ENGINE name to load an arbitrary shared library from anywhere on the filesystem via path traversal. The library's initialization code executes immediately during loading, before Firebird validates the module, achieving code execution as the server's OS account. This issue has been fixed in versions 5.0.4, 4.0.7 and 3.0.14.

Details CVE

Score CVSS v3.19.9

SeveriteCRITICAL

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisLOW

Interaction utilisateurNONE

Publie4/17/2026

Derniere modification4/20/2026

Sourcenvd

Observations honeypot0

Faiblesses (CWE)

CWE-22CWE-73CWE-94CWE-427

References

https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14(security-advisories@github.com)

https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7(security-advisories@github.com)

https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4(security-advisories@github.com)

https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-7pxc-h3rv-r257(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

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