CVE-2026-26117: Arc Enabled Servers - Azure Connected Machine Agent Elevation of Privilege Vulnerability

Overview

Severity

High (CVSS 7.8)

CVSS Vector

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

Category

Elevation of Privilege

Exploit Status

Not Exploited

Exploitation Likelihood

Unlikely

Patch Tuesday

2026-Mar

Released

2026-03-10

EPSS Score

0.04% (percentile: 12.1%)

Description

Authentication bypass using an alternate path or channel in Azure Windows Virtual Machine Agent allows an authorized attacker to elevate privileges locally.

FAQ

What privileges could be gained by an attacker who successfully exploited this vulnerability? An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.

Affected Products (1)

Azure

• Arc Enabled Servers - Azure Connected Machine Agent

Security Updates (2)

• Release Notes
• Release Notes

Acknowledgments

<a href="https://www.linkedin.com/in/ben-zamir-401003237">Ben Zamir</a> with <a href="https://cymulate.com/">Cymulate</a>, <a href="https://www.linkedin.com/in/ilan-kalendarov-4826741a0/">Ilan Kalendarov</a> with <a href="https://cymulate.com/">Cymulate</a>

Revision History

• 2026-03-10: Information published.