Vulnerability · Published Oct 20, 2026 · Assigned by airbus
CVE-2026-111090Improper Signature Verification of Firmware Update Files
High 7.8
In plain English
A high-severity improper authentication in Stormshield Network Security from Stormshield. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities).
Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.2%top 94.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Stormshield | Stormshield Network Security | 4.3.0 – through 4.3.444.8.0 – through 4.8.195.0.0 – through 5.0.95.1.0 – through 5.1.3 |
Weakness: CWE-287 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H