Deserialization of Untrusted Data in SonicWall GMS - CVE-2026-18634
Published: August 11, 2026
Vulnerability identifier: #VU141450
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-18634
CWE-ID: CWE-502
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform unauthorized actions.
The vulnerability exists due to deserialization of untrusted data in a GMS service when handling serialized objects. A remote attacker can interact with the affected service to perform unauthorized actions.
Affected software
SonicWall GMS
How to mitigate CVE-2026-18634
Install security update from vendor's website.
SonicWall GMS - update to 9.5.2