What is CVE-2026-21224?

CVE-2026-21224 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Azure Connected Machine Agent Elevation of Privilege Vulnerability

Which CVE IDs does CVE-2026-21224 cover?

CVE-2026-21224 covers the following CVE IDs: CVE-2026-21224. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-21224?

CVE-2026-21224 has a CVSS v3 base score of 7.8, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-21224?

CVE-2026-21224 affects 1 product, including: Azure Connected Machine Agent.

CVE-2026-21224HighCVSS 7.8

Azure Connected Machine Agent Elevation of Privilege Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

June 2, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-21224 →

📋 Description

Stack-based buffer overflow in Azure Connected Machine Agent allows an authorized attacker to elevate privileges locally.

🎯 Affected products1

Azure Connected Machine Agent

✅ Remediation

KBRelease Notes (Windows Update) — fixed build 1.60.03293.2680 KBRelease Notes (Linux Update) — fixed build 1.60.03293.809

🔗 References (4)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21224
patchhttps://gbl.his.arc.azure.com/azcmagent/1.60/AzureConnectedMachineAgent.msi
referencehttps://learn.microsoft.com/en-us/azure/azure-arc/servers/agent-release-notes
patchhttps://learn.microsoft.com/en-us/azure/azure-arc/servers/manage-agent?tabs=windows#install-a-specific-version-of-the-agent