#VU123691 Improper Authentication in Windows and Windows Server - CVE-2026-26128
Published: March 10, 2026
Vulnerability identifier: #VU123691
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-26128
CWE-ID: CWE-287
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Windows
Windows Server
Windows
Windows Server
Software vendor:
Microsoft
Microsoft
Description
The vulnerability allows a local user to bypass authentication process.
The vulnerability exists due to an error when processing authentication requests in Windows SMB Server. A local user can bypass authentication process and gain unauthorized access to the application.
Remediation
Install updates from vendor's website.