CVE-2026-113469

Improper Signature Verification of Active Update Files

Published Oct 20, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
A failure has been identified in the SNS during dynamic data files signature check.



A logic error in the signature verification routine resulting in acceptance of unauthenticated dynamic data update during Autoupdate routine.

Remediation

Vendor Solution

The following updates will fix this vulnerability: * SNS 5.1.4 EA * SNS 5.0.10 * SNS 4.8.20 LTSB


Vendor Workaround

* Use only official Stormshield update servers or SMC mirror servers, if configured, ensuring that HTTPS is enabled. * If you use custom update servers, ensure that HTTPS is enabled and verify that the SHA-256 hashes of the files hosted on your servers match those obtained from the official Stormshield update servers.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Stormshield
Stormshield stormshield Network Security
Vendors & Products Stormshield
Stormshield stormshield Network Security
Type Values Removed Values Added
Description A failure has been identified in the SNS during dynamic data files signature check. A logic error in the signature verification routine resulting in acceptance of unauthenticated dynamic data update during Autoupdate routine.
Title Improper Signature Verification of Active Update Files
Weaknesses CWE-287
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
airbus
Published
Updated
Oct 20, 2026, 6:08 PM
Reserved
Oct 20, 2026, 8:23 AM
Status
Deferred
Published
Oct 20, 2026, 9:17 AM
Modified
Oct 20, 2026, 7:35 PM