Command Injection in Windows Admin Center - CVE-2026-56197
Published: July 17, 2026 / Updated: August 31, 2026
Vulnerability identifier: #VU138262
CSH Severity: Medium
CVSS v4: 8.7 [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]
CVE-ID: CVE-2026-56197
CWE-ID: CWE-77
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary commands on the system.
The vulnerability exists due to insufficient input validation in Windows Admin Center (WAC). A remote user can pass specially crafted data to the application and execute arbitrary commands.
Affected software
Windows Admin Center
How to mitigate CVE-2026-56197
Install updates from vendor's website.
Windows Admin Center - update to 2.7.4
Links to Public Exploits and PoC-codes
- Exploit #13003 - CVE-Exploit-POC (CVE Exploit PoCs is a collection of proof-of-concept scripts and documentation for various CVE vulnerabilities.) (August 31, 2026)
- Exploit #12969 - PoCs (PoC for CVE-2026-56197 — Windows Admin Center (WAC) command injection RCE via invokeCommand; scripted no-browser auth (csrf/JWK/RSA-OAEP login chain), --cmd/--proof/--rev reverse-shell modes) (August 21, 2026)