CVE-2026-40342

criticalpriority · track · 0EPSS 0.007 · 53 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.69% (53rd) EPSS

CVSS 9.9 · critical

Is it mine?

20 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-28

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.

cvss

Technical severity, 0–10. One row per scoring source.

10.0

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.19.9criticalAV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.110criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Hsecondary · ENISA EU

v3.19.9criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Hsecondary · security-advisories@github.comexploitability 3.1 · impact 6

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-22USCWE-22USCWE-427USCWE-73USCWE-73USCWE-94USCWE-94US

affected products (20)

Products and version ranges known to be affected.

Firebird Firebird <3.0.14all versionscert_bundDE
Firebird Firebird <4.0.7all versionscert_bundDE
Firebird Firebird <5.0.4all versionscert_bundDE
Firebird Firebird <6.0all versionscert_bundDE
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
Firebird Firebird< 3.0.14cert_bundDE
Firebird Firebird< 4.0.7cert_bundDE
Firebird Firebird< 5.0.4cert_bundDE
Firebird Firebird< 6.0cert_bundDE
FirebirdSQL firebird≤ < 3.0.14enisa_euvdEU
FirebirdSQL firebird4.0.0, → 4.0.7enisa_euvdEU
FirebirdSQL firebird5.0.0, → 5.0.4enisa_euvdEU
Firebird Foundation Inc. Firebird≤ 4.0.7fstec_bduRU
Firebird Foundation Inc. Firebird≤ 5.0.4fstec_bduRU
Firebird Foundation Inc. Firebird≤ 3.0.14fstec_bduRU
ООО «Ред Софт» РЕД ОС≤ 8.0fstec_bduRU
ООО «Ред Софт» РЕД ОС≤ 7.3fstec_bduRU
firebirdsql firebird< 3.0.14nvdUScpe:2.3:a:firebirdsql:firebird:*:*:*:*:*:*:*:*
firebirdsql firebird4.0.0 → 4.0.7nvdUScpe:2.3:a:firebirdsql:firebird:*:*:*:*:*:*:*:*
firebirdsql firebird5.0.0 → 5.0.4nvdUScpe:2.3:a:firebirdsql:firebird:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-1171Firebird: Mehrere SchwachstellenDeutsch2026-04-19csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Firebird ausnutzen, um beliebigen Programmcode mit Administratorrechten auszuführen, vertrauliche Informationen offenzulegen oder einen Denial-of-Service-Zustand zu verursachen.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund nvd NVD CVE.org MITRE

published 2026-04-17modified 2026-10-26

references (10)

External citations — patches, advisories, analysis.

scry

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