CVE-2025-46373CWE-122

CVE-2025-46373

High · published November 18, 2025

CVSS v3.1
7.8
EPSS
0%
Percentile
5.3
In the wild
Unconfirmed
What it is

⚡ A crafty local user could exploit a heap-based buffer overflow in FortiClient and run wild with arbitrary code! 🚨 Think of this like a sneaky librarian who finds a loophole to access restricted archives — bypassing the integrity checks on the library’s catalog and rewriting history! 📚 If an attacker exploits this vulnerability, they could potentially gain complete control over the affected system, executing any command they desire. This could lead to data breaches, unauthorized access to sensitive information, or manipulation of system processes, making it a serious risk for any organization using vulnerable versions of FortiClient.

Put simply

Think of this like a sneaky librarian who finds a loophole to access restricted archives — bypassing the integrity checks on the library’s catalog and rewriting history! 📚 This vulnerability arises from improper handling of memory in the FortiClient's 'fortips_74.sys' driver, allowing authenticated users to bypass Windows heap integrity protections and execute arbitrary code.

What to do

If an attacker exploits this vulnerability, they could potentially gain complete control over the affected system, executing any command they desire. This could lead to data breaches, unauthorized access to sensitive information, or manipulation of system processes, making it a serious risk for any organization using vulnerable versions of FortiClient. To protect your systems, immediately upgrade FortiClient to versions 7.4.4 or 7.2.9, which include patches for this vulnerability. Additionally, review user access permissions and consider implementing stricter local security policies. You've got this! Follow these steps, and you'll help keep your systems secure and your users safe! 🛡️

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00164 · 5.3th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
Published
2025-11-18T22:16Z
Affected products (2)
ProductVersionsFixed in
fortinet/forticlient≥ 7.2.0, < 7.2.97.2.9
fortinet/forticlient≥ 7.4.0, < 7.4.47.4.4
References (1)
EPSS history
Timeline
  • 18 NOV 17:01Z
    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…
    cvelistv5