MSRC-CVE-2026-26141 — Hybrid Worker Extension (Arc‑enabled Windows VMs) Elevation of Privilege Vulnerability

Summary

Impact: Elevation of Privilege. Microsoft rating: Important. Not known to be exploited — Exploitation Unlikely. Customer action: Required.

Details

What privileges could be gained by an attacker who successfully exploited this vulnerability?
An attacker who successfully exploited this vulnerability could gain ELEVATED privileges, which may allow them to perform actions beyond their original permissions.

Security updates
1.3.74 — https://review.learn.microsoft.com/en-us/azure/automation/whats-new?branch=main

Vulnerabilities 1

High 7.8

CVE-2026-26141

Hybrid Worker Extension (Arc‑enabled Windows VMs) Elevation of Privilege Vulnerability

Improper authentication in Azure Arc allows an authorized attacker to elevate privileges locally.

Microsoft Azure Automation Hybrid Worker Windows Extension Windows

Mar 10, 2026

Revision history

2026-03-10 #1
Information published.

References

CVE-2026-26141 Hybrid Worker Extension (Arc‑enabled Windows VMs) Elevation of Privilege Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26141
Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
Common Vulnerability Scoring System
https://www.first.org/cvss