CVE-2015-4077: Fortinet FortiClient

Low severity, CVSS 2.1. EPSS: 1% 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 read arbitrary kernel memory via a 0x22608C ioctl call.

Affected products

• Fortinet FortiClient: up to and including 5.2.3

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