Insufficient Session Expiration in FortiOS - CVE-2025-25252
Published: October 15, 2025
Vulnerability identifier: #VU117144
CSH Severity: Medium
CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-25252
CWE-ID: CWE-613
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
The vulnerability exists due to insufficient session expiration in SSLVPN using SAML authentication. A remote attacker (e.g. a former admin whose account was removed and whose session was terminated) in possession of the saml record of a user session can access or re-open that session via re-use of SAML record.
Affected software
FortiOS
How to mitigate CVE-2025-25252
Install update from vendor's website.
FortiOS - addressed in versions 7.0.17, 7.2.11, 7.4.7, 7.6.3