Unauthenticated Remote Code Execution Vulnerability in GMS by SonicWall
CVE-2026-66145

9.1CRITICAL

Key Information:

Vendor

Sonicwall
Status
Gms
Vendor
CVE Published:
11 August 2026

What is CVE-2026-66145?

An unauthenticated remote code execution vulnerability exists in versions of GMS 9.5.1 and earlier, allowing a remote attacker to exploit the zipslip vulnerability. This can lead to unauthorized access, enabling the attacker to read sensitive data and write arbitrary files to the server, posing a significant risk to system integrity and confidentiality.

Affected Version(s)

GMS Windows 9.5.1 and earlier versions

References

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-202...
vendor-advisory

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.