FortiOS SSL VPN 7.6.*: Insufficient Session Expiration (CWE-613)
CVE-2025-25252 Published on October 14, 2025
An Insufficient Session Expiration vulnerability [CWE-613] in FortiOS SSL VPN 7.6.0 through 7.6.2, 7.4.0 through 7.4.6, 7.2.0 through 7.2.10, 7.0.0 through 7.0.16, 6.4 all versions may allow 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 to access or re-open that session via re-use of SAML record.
Vulnerability Analysis
CVE-2025-25252 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality and integrity, and no impact on availability.
Weakness Type
Insufficient Session Expiration
According to WASC, "Insufficient Session Expiration is when a web site permits an attacker to reuse old session credentials or session IDs for authorization."
Products Associated with CVE-2025-25252
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Affected Versions
Fortinet FortiOS:- Version 7.6.0, <= 7.6.2 is affected.
- Version 7.4.0, <= 7.4.6 is affected.
- Version 7.2.0, <= 7.2.10 is affected.
- Version 7.0.0, <= 7.0.16 is affected.
- Version 6.4.0, <= 6.4.16 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.