CVE-2025-46373: Execute unauthorized code or commands in Fortinet FortiClientWindows
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
AI Analysis
Technical Summary
This vulnerability (CVE-2025-46373) affects Fortinet FortiClientWindows versions 7.4.0 through 7.4.3 and 7.2.0 through 7.2.8. It is a heap-based buffer overflow (CWE-122) in the "fortips_74.sys" driver component that may allow an authenticated local IPSec user to execute arbitrary code or commands. Exploitation requires bypassing Windows heap integrity protections. The vulnerability is rated high severity with a CVSS 3.1 base score of 7.1 (Attack Vector: Local, Attack Complexity: High, Privileges Required: Low, User Interaction: None, Scope: Changed, Confidentiality/Integrity/Availability: High). Fortinet has released an official fix to address this issue.
Potential Impact
An authenticated local IPSec user could exploit this heap-based buffer overflow to execute arbitrary code or commands on the affected system. This could lead to full compromise of the affected FortiClientWindows installation, impacting confidentiality, integrity, and availability of the system. The attack complexity is high due to the need to bypass Windows heap integrity protections, and user interaction is not required.
Mitigation Recommendations
An official fix is available from Fortinet to remediate this vulnerability. Users should apply the vendor-provided patches for FortiClientWindows versions 7.4.0 through 7.4.3 and 7.2.0 through 7.2.8 as soon as possible. No additional mitigations are specified beyond applying the official fix.
CVE-2025-46373: Execute unauthorized code or commands in Fortinet FortiClientWindows
Description
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
CVSS v3.1
Score 7.1high
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2025-46373) affects Fortinet FortiClientWindows versions 7.4.0 through 7.4.3 and 7.2.0 through 7.2.8. It is a heap-based buffer overflow (CWE-122) in the "fortips_74.sys" driver component that may allow an authenticated local IPSec user to execute arbitrary code or commands. Exploitation requires bypassing Windows heap integrity protections. The vulnerability is rated high severity with a CVSS 3.1 base score of 7.1 (Attack Vector: Local, Attack Complexity: High, Privileges Required: Low, User Interaction: None, Scope: Changed, Confidentiality/Integrity/Availability: High). Fortinet has released an official fix to address this issue.
Potential Impact
An authenticated local IPSec user could exploit this heap-based buffer overflow to execute arbitrary code or commands on the affected system. This could lead to full compromise of the affected FortiClientWindows installation, impacting confidentiality, integrity, and availability of the system. The attack complexity is high due to the need to bypass Windows heap integrity protections, and user interaction is not required.
Mitigation Recommendations
An official fix is available from Fortinet to remediate this vulnerability. Users should apply the vendor-provided patches for FortiClientWindows versions 7.4.0 through 7.4.3 and 7.2.0 through 7.2.8 as soon as possible. No additional mitigations are specified beyond applying the official fix.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- fortinet
- Date Reserved
- 2025-04-23T09:14:14.309Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
Threat ID: 691ca896209f2030fa0168ef
Added to database: 11/18/2025, 17:10:46 UTC
Last enriched: 08/17/2026, 13:23:38 UTC
Last updated: 09/10/2026, 19:36:50 UTC
Views: 238
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