CVE-2021-41031: Fortinet FortiClient

High severity, CVSS 7.8. EPSS: 0.5% chance of exploitation in the next 30 days.

A relative path traversal vulnerability [CWE-23] in FortiClient for Windows versions 7.0.2 and prior, 6.4.6 and prior and 6.2.9 and below may allow a local unprivileged attacker to escalate their privileges to SYSTEM via the named pipe responsible for FortiESNAC service.

Affected products

• Fortinet FortiClient: from 6.2.0, up to and including 6.2.9; from 6.4.0, up to and including 6.4.6; from 7.0.0, up to and including 7.0.2

Published 2022-07-18. Last modified 2026-06-17.