CVE-2026-18634: SonicWall Gms

High severity, CVSS 8.4. EPSS: 0.3% chance of exploitation in the next 30 days.

An insecure handling of serialized objects vulnerability was found in the one of the service of GMS application 9.5.1 (Build 9510.1044) and earlier versions. A local attacker with the ability to interact with the service could exploit this behavior to perform unauthorized actions through the affected component.

Affected products

• SonicWall Gms: up to and including 9.5.1

Published 2026-08-11. Last modified 2026-08-28.