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High7.1Fortinet

High [CVE-2025-46373] 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 "fortips_74.sys"

This high-severity Fortinet advisory covers CVE-2025-46373.

CVE-2025-46373 Published Nov 18, 2025Updated by vendor Aug 17, 2026
Affected products & platforms
FortinetUnclassified
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Summary

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 "fortips_74.sys". The attacker would need to bypass the Windows heap integrity protections

Affected versions
  • FortiClientWindows 7.4: 7.4.0 through 7.4.3
  • FortiClientWindows 7.2: 7.2.0 through 7.2.8

Official advisory · high-confidence parse· fetched 1 hour ago·verify at source

Fixed versions
  • FortiClientWindows 7.4: 7.4.4
  • FortiClientWindows 7.2: 7.2.9

Official advisory · high-confidence parse· fetched 1 hour ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • Upgrade per the Affected/Solution table: FortiClientWindows 7.4: 7.4.4; FortiClientWindows 7.2: 7.2.9.

Official advisory · high-confidence parse· fetched 1 hour ago·verify at source

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