Path traversal in SonicWall Network Security Manager - CVE-2026-81939
Published: September 3, 2026
Vulnerability identifier: #VU146862
CSH Severity: Low
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-81939
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to write files outside the intended directory.
The vulnerability exists due to path traversal in file upload and archive processing functionality when processing a specially crafted archive. A remote privileged user can upload a specially crafted archive to write files outside the intended directory.
Affected software
SonicWall Network Security Manager
How to mitigate CVE-2026-81939
Install security update from vendor's website.
SonicWall Network Security Manager - update to 4.3.1-R4