CVE-2025-25248: Fortinet FortiOS

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

An Integer Overflow or Wraparound vulnerability [CWE-190] in FortiOS version 7.6.2 and below, version 7.4.7 and below, version 7.2.10 and below, 7.2 all versions, 6.4 all versions, FortiProxy version 7.6.2 and below, version 7.4.3 and below, 7.2 all versions, 7.0 all versions, 2.0 all versions and 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 SSL-VPN RDP and VNC bookmarks may allow an authenticated user to affect the device SSL-VPN availability 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 2.0.0, before 7.4.4 (fixed in 7.4.4); from 7.6.0, before 7.6.3 (fixed in 7.6.3)

Published 2025-08-12. Last modified 2026-06-17.