CVE-2026-111090

Improper Signature Verification of Firmware Update Files

State: Published
Severity: 7.8 High
Published: Oct 20, 2026
Updated: Oct 20, 2026
Reserved: Oct 15, 2026

Description

A logic error exists in the signature verification routine resulting in acceptance of unauthenticated update and license files.It is necessary to use only the MyStormshield servers to retrieve update files or licenses, or to use automatic verification via SNS.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	airbus

Weaknesses

CWE-287 Improper Authentication

Affected Products

Product	Versions
Stormshield Network SecurityStormshield	4.3.0 through 4.3.44Affected 4.8.0 through 4.8.19Affected 5.0.0 through 5.0.9Affected 5.1.0 through 5.1.3Affected 4.8.20 LTSBNot affected 5.0.10Not affected 5.1.4 EANot affected 4.3.45 QSNot affected

References

https://advisories.stormshield.eu/2026-031/

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