CVE-2026-21522 MEDIUM

CVE-2026-21522: Microsoft ACI Confidential Containers Elevation of Privilege Vulnerability

Vendor Microsoft
Product Microsoft ACI Confidential Containers
Weakness CWE-77
Published February 10, 2026
Last update May 11, 2026
View on NVD All CVEs

CVSS base score

6.7/10
Attack vector Local
Attack complexity Low
Privileges required High
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

What the vulnerability does

01Description

Improper neutralization of special elements used in a command ('command injection') in Azure Compute Gallery allows an authorized attacker to elevate privileges locally.

Key dates

02Disclosure timeline

February 10, 2026 CVE published
May 11, 2026 Record updated