Path traversal in Fortinet FortiClient for Windows - CVE-2021-41031
Published: July 5, 2022
Vulnerability identifier: #VU64936
CSH Severity: Low
CVSS v4: 9.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H]
CVE-ID: CVE-2021-41031
CWE-ID: CWE-22
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to input validation error when processing directory traversal sequences in file names. A local user can execute arbitrary code with SYSTEM privileges via the named pipe responsible for FortiESNAC service.
Affected software
Fortinet FortiClient for Windows
How to mitigate CVE-2021-41031
Install update from vendor's website.
Fortinet FortiClient for Windows - addressed in versions 6.4.7, 7.0.3