CVE-2015-5735: Fortinet FortiClient

High severity, CVSS 7.2. EPSS: 0.5% chance of exploitation in the next 30 days.

The (1) mdare64_48.sys, (2) mdare32_48.sys, (3) mdare32_52.sys, and (4) mdare64_52.sys drivers in Fortinet FortiClient before 5.2.4 allow local users to write to arbitrary memory locations via a 0x226108 ioctl call.

Affected products

• Fortinet FortiClient: up to and including 5.2.3

Published 2015-09-03. Last modified 2026-06-17.