CVE-2025-25248

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-08-12 · updated 2026-06-17
Weakness: CWE-190

Description

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 (FortiGate): from 6.4.0 before 7.2.11; from 7.4.0 before 7.4.8; from 7.6.0 before 7.6.3 — fixed in 7.2.11, 7.4.8, 7.6.3
Fortinet FortiPAM: from 1.0.0 before 1.4.3; 1.5.0 — fixed in 1.4.3
Fortinet FortiProxy: from 2.0.0 before 7.4.4; from 7.6.0 before 7.6.3 — fixed in 7.4.4, 7.6.3

How to fix

Upgrade to a fixed version: Fortinet FortiOS (FortiGate) 7.2.11, 7.4.8, 7.6.3; Fortinet FortiPAM 1.4.3; Fortinet FortiProxy 7.4.4, 7.6.3. Check the vendor advisory for mitigations.

References

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