Insufficient Session Expiration in FortiOS - CVE-2025-62631
Published: December 9, 2025
Vulnerability identifier: #VU119429
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-62631
CWE-ID: CWE-613
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Fortinet, Inc
Affected software:
FortiOS
FortiOS
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
The vulnerability exists due to insufficient session expiration in SSLVPN. An attacker can maintain access to network resources via an active session not terminated after a user's password change under particular conditions outside of the attacker's control.
How to mitigate CVE-2025-62631
Install update from vendor's website.