Stack-based buffer overflow in Azure Connected Machine Agent - CVE-2026-21224

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Main Vulnerability Database Vulnerabilities #VU121273

Stack-based buffer overflow in Azure Connected Machine Agent - CVE-2026-21224

Published: January 13, 2026


Vulnerability identifier: #VU121273
CSH Severity: Low
CVSS v4.0: 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-2026-21224
CWE-ID: CWE-121
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: Microsoft
Affected software:
Azure Connected Machine Agent

Detailed vulnerability description

The vulnerability allows a local user to escalate privileges on the target system.

The vulnerability exists due to a boundary error in Azure Connected Machine Agent. A local user can trigger stack-based buffer overflow and gain elevated privileges on the system.


How to mitigate CVE-2026-21224

Install updates from vendor's website.

Sources