SB2026021802 - Privilege escalation in Microsoft Windows Admin Center
Published: February 18, 2026
Security Bulletin ID
SB2026021802
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper authentication (CVE-ID: CVE-2026-26119)
CWE-ID: CWE-287 - Improper Authentication
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote user to compromise the affected system.
The vulnerability exists due to an error in the authentication process. A remote user can execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.