FG-IR-25-411: 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

Affected Software

4 affected componentsFixes available
Fortinet FortiOS=.
Fortinet FortiOS>=7.2
Fortinet FortiOS>=7.0
Fortinet FortiOS>=6.4

Event History

Dec 9, 2025
Advisory Published
via FortiGuard·12:00 AM
Data Sourced
via FortiGuard·12:00 AM
DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What is the severity of FG-IR-25-411?

The severity of FG-IR-25-411 is classified as insufficient session expiration, which can lead to unauthorized access under specific conditions.

2

How do I fix FG-IR-25-411?

To fix FG-IR-25-411, update FortiOS to version 7.4.1 or later.

3

What versions of FortiOS are affected by FG-IR-25-411?

FortiOS versions 7.2.x, 7.0.x, and 6.4.x are affected by FG-IR-25-411.

4

What can an attacker do with FG-IR-25-411?

An attacker can maintain access to network resources through an active session that is not properly terminated after a password change.

5

Are session tokens vulnerable in FG-IR-25-411?

Yes, session tokens may remain valid even after a user changes their password, which is the main vulnerability in FG-IR-25-411.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
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