All vulnerabilities
CVE-2026-111090

Stormshield Network Security: Improper Signature Verification of Firmware Update Files

Stormshield Stormshield Network Security
Open in ThreatlineRecord JSON
CVSS
7.8High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.12%Chance of exploitation activity in the next 30 days, higher than 1% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published20 Oct 2026Updated 20 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

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.

Text from CVE List

Affected versions 8

  • Stormshield Network Securityaffected: 4.3.0 through 4.3.44CVE List
  • Stormshield Network Securityaffected: 4.8.0 through 4.8.19CVE List
  • Stormshield Network Securityaffected: 5.0.0 through 5.0.9CVE List
  • Stormshield Network Securityaffected: 5.1.0 through 5.1.3CVE List
  • Stormshield Network Securityunaffected: 4.8.20 LTSBCVE List
  • Stormshield Network Securityunaffected: 5.0.10CVE List
  • Stormshield Network Securityunaffected: 5.1.4 EACVE List
  • Stormshield Network Securityunaffected: 4.3.45 QSCVE List

References 1