Improper Signature Verification of Firmware Update Files
Summary
| CVE | CVE-2026-111090 |
|---|---|
| State | PUBLISHED |
| Assigner | airbus |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-10-20 08:16:42 UTC |
| Updated | 2026-10-20 19:35:23 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.1 7.8 HIGH from [email protected]
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS: 0.001220000 probability, percentile 0.018270000 (date 2026-10-20)
Problem Types: CWE-287 | CWE-287 CWE-287: Improper Authentication
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 7.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| 3.1 | CNA | CVSS | 7.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
NoneUser Interaction
RequiredScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Stormshield | Stormshield Network Security | affected 4.3.0 4.3.44 semver | Not specified |
| CNA | Stormshield | Stormshield Network Security | affected 4.8.0 4.8.19 semver | Not specified |
| CNA | Stormshield | Stormshield Network Security | affected 5.0.0 5.0.9 semver | Not specified |
| CNA | Stormshield | Stormshield Network Security | affected 5.1.0 5.1.3 semver | Not specified |
| CNA | Stormshield | Stormshield Network Security | unaffected 4.8.20 LTSB semver | Not specified |
| CNA | Stormshield | Stormshield Network Security | unaffected 5.0.10 semver | Not specified |
| CNA | Stormshield | Stormshield Network Security | unaffected 5.1.4 EA semver | Not specified |
| CNA | Stormshield | Stormshield Network Security | unaffected 4.3.45 QS semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| advisories.stormshield.eu/2026-031 | [email protected] | advisories.stormshield.eu | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Additional Advisory Data
Solutions
CNA: The following updates will fix this vulnerability: * SNS 5.1.4 EA * SNS 5.0.10 * SNS 4.8.20 LTSB
Workarounds
CNA: If applicable, verify the SHA-256 hash of each update file. The reference hashes are available in the MyStormshield portal
There are currently no legacy QID mappings associated with this CVE.