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Fortinet Fortigate Insufficient Session Expiration in SSLVPN (FG-IR-25-411)

medium Nessus Plugin ID 277943

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Synopsis

Fortinet Firewall is missing one or more security-related updates.

Description

The version of Fortigate installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the FG-IR-25-411 advisory.

 - An insufficient session expiration vulnerability [CWE-613] in Fortinet FortiOS 7.4.0, FortiOS 7.2...
 (CVE-2025-62631)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

For 6.4.x / 7.0.x / 7.2.x, see vendor advisory. For 7.4.x, upgrade to Fortigate version 7.4.1 or later.

See Also

https://www.fortiguard.com/psirt/FG-IR-25-411

Plugin Details

Severity: Medium

ID: 277943

File Name: fortigate_FG-IR-25-411.nasl

Version: 1.1

Type: local

Family: Firewalls

Published: 12/9/2025

Updated: 12/9/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.4

CVSS v2

Risk Factor: Medium

Base Score: 5.1

Temporal Score: 3.8

Vector: CVSS2#AV:N/AC:H/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2025-62631

CVSS v3

Risk Factor: Medium

Base Score: 5.6

Temporal Score: 4.9

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:fortinet:fortios

Required KB Items: Host/Fortigate/model, Host/Fortigate/version

Exploit Ease: No known exploits are available

Patch Publication Date: 12/9/2025

Vulnerability Publication Date: 12/9/2025

Reference Information

CVE: CVE-2025-62631