Missing Authorization in Fortinet FortiClient for Windows - CVE-2026-44278
Published: May 12, 2026
Vulnerability identifier: #VU131198
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-44278
CWE-ID: CWE-862
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Fortinet, Inc
Affected software:
Fortinet FortiClient for Windows
Fortinet FortiClient for Windows
Detailed vulnerability description
The vulnerability allows a local privileged user to disclose sensitive information.
The vulnerability exists due to improper authorization in an unprotected DLL function in the GUI component when decrypting a currently logged in user's VPN password. A local privileged user can invoke the unprotected DLL function to disclose sensitive information.
The issue is limited to the VPN password of a currently logged in user.
How to mitigate CVE-2026-44278
Install security update from vendor's website.