CVE-2025-62631: Insufficient Session Expiration in SSLVPN

Published Dec 9, 2025
·
Updated

An Insufficient Session Expiration vulnerability [CWE-613] in FortiOS SSLVPN may allow an attacker to 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

Other sources

An insufficient session expiration vulnerability [CWE-613] vulnerability in Fortinet FortiOS 7.4.0, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4 all versions allows attacker to maintain access to network resources via an active SSLVPN session not terminated after a user's password change under particular conditions outside of the attacker's control

MITRE

Affected Software

5 affected componentsFixes available
Fortinet FortiOS=.
Fortinet FortiOS>=7.2
Fortinet FortiOS>=7.0
Fortinet FortiOS>=6.4
Fortinet FortiOS>=6.4.0<7.4.1

Remediation

Information

Upgrade to FortiOS version 7.6.4 or above Upgrade to FortiOS version 7.4.8 or above

Event History

Dec 9, 2025
Advisory Published
via FortiGuard·12:00 AM
Data Sourced
via FortiGuard·12:00 AM
DescriptionSeverityWeaknessAffected Software
CVE Published
via MITRE·05:18 PM
Data Sourced
via MITRE·05:18 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·06:16 PM
DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2025-62631?

CVE-2025-62631 is classified as a critical vulnerability due to its potential impact on session security.

2

How do I fix CVE-2025-62631?

To fix CVE-2025-62631, upgrade to FortiOS version 7.4.1 or later.

3

What products are affected by CVE-2025-62631?

CVE-2025-62631 affects Fortinet FortiOS versions 6.4 to 7.2 and includes 7.0 all versions.

4

What type of vulnerability is CVE-2025-62631?

CVE-2025-62631 is an insufficient session expiration vulnerability.

5

What could an attacker do by exploiting CVE-2025-62631?

An attacker could maintain unauthorized access to network resources via an active SSLVPN session.

Contact

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