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CVE-2026-66154

Last refreshed2026-10-23

Status: UPDATED  |  Advisory ID: CVE-2026-66154

Key Details

CVECVE-2026-66154
CVSS Score / Version
8.3 (High) / CVSS v3.1
Updated2026-10-23
CVSS Vector
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS Prose
attack vector is adjacent; attack complexity is high; privileges required is none; user interaction is none; scope is changed; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products
SonicWall GMS
Classified as
CWE-295 (Improper Certificate Validation)

Affected Products, Subsystems & Sectors

VendorProductAffected VersionsPatch Status
SonicWallGMS
SubsystemsGeneral OT
SectorsMultiple

What to Know

An insufficient certificate validation in a privileged communication workflow, was identified in a GMS application 9.5.1 (Build 9510.1044) and earlier versions which, under a successful MitM attack and controlled network conditions, could permit unauthorized changes.

What to Do

Monitor SonicWall's web page for any future patch releases.

References

SourceReference
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-66154
CVEhttps://www.cve.org/CVERecord?id=CVE-2026-66154
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