Auth bypass in Stormshield Network Security
CVE-2026-111090
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.
Vulnerability class: Broken Authentication
Published .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-111090?
- CVE-2026-111090 is a high-severity vulnerability in Stormshield Network Security, classified under Improper Authentication. CVSS score: 7.8/10. Published 2026-10-20.
- How severe is CVE-2026-111090?
- High severity. CVSS v3 base score is 7.8 out of 10.