CVE-2025-46373: Buffer Overflow

Published Nov 18, 2025
·
Updated

A Heap-based Buffer Overflow vulnerability [CWE-122] vulnerability in Fortinet FortiClientWindows 7.4.0 through 7.4.3, FortiClientWindows 7.2.0 through 7.2.8 may allow an authenticated local IPSec user to execute arbitrary code or commands via "fortips74.sys". The attacker would need to bypass the Windows heap integrity protections

Affected Software

3 affected components
Fortinet FortiClient>=7.4.0<=7.4.3, >=7.2.0<=7.2.8
Fortinet FortiClient Windows>=7.2.0<7.2.9
Fortinet FortiClient Windows>=7.4.0<7.4.4

Remediation

Information

Upgrade to FortiClientWindows version 7.4.4 or above Upgrade to FortiClientWindows version 7.2.9 or above

Event History

Nov 18, 2025
CVE Published
via MITRE·05:01 PM
Data Sourced
via MITRE·05:01 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·05:16 PM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2025-46373?

CVE-2025-46373 is considered a high-severity vulnerability due to its potential to allow arbitrary code execution.

2

How do I fix CVE-2025-46373?

To remediate CVE-2025-46373, update Fortinet FortiClient to the latest version beyond 7.4.3 or 7.2.8.

3

Who is affected by CVE-2025-46373?

Users of Fortinet FortiClient versions 7.4.0 through 7.4.3 and 7.2.0 through 7.2.8 are impacted by CVE-2025-46373.

4

What type of vulnerability is CVE-2025-46373?

CVE-2025-46373 is classified as a Heap-based Buffer Overflow vulnerability.

5

Can CVE-2025-46373 be exploited remotely?

No, CVE-2025-46373 requires an authenticated local IPSec user to exploit the vulnerability.

Contact

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