Command Injection in Microsoft ACI Confidential Containers - CVE-2026-21522
Published: February 10, 2026
Vulnerability identifier: #VU122578
CSH Severity: Low
CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-21522
CWE-ID: CWE-77
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to execute arbitrary commands on the system.
The vulnerability exists due to insufficient input validation in Microsoft ACI Confidential Containers. A local administrator can pass specially crafted data to the application and execute arbitrary commands with elevated privileges.
Affected software
Microsoft ACI Confidential Containers
How to mitigate CVE-2026-21522
Install updates from vendor's website.