CVE-2025-57740: Fortinet FortiOS

High severity, CVSS 8.8. EPSS: 0.7% chance of exploitation in the next 30 days.

An Heap-based Buffer Overflow vulnerability [CWE-122] in FortiOS version 7.6.2 and below, version 7.4.7 and below, version 7.2.10 and below, 7.0 all versions, 6.4 all versions; FortiPAM version 1.5.0, version 1.4.2 and below, 1.3 all versions, 1.2 all versions, 1.1 all versions, 1.0 all versions and FortiProxy version 7.6.2 and below, version 7.4.3 and below, 7.2 all versions, 7.0 all versions RDP bookmark connection may allow an authenticated user to execute unauthorized code via crafted requests.

Affected products

• Fortinet FortiOS: from 6.4.0, before 7.2.11 (fixed in 7.2.11); from 7.4.0, before 7.4.8 (fixed in 7.4.8); from 7.6.0, before 7.6.3 (fixed in 7.6.3)
• Fortinet Fortipam: from 1.0.0, before 1.4.3 (fixed in 1.4.3); version 1.5.0 only
• Fortinet FortiProxy: from 7.0.0, before 7.4.4 (fixed in 7.4.4); from 7.6.0, before 7.6.3 (fixed in 7.6.3)

Published 2025-10-14. Last modified 2026-06-17.