What is the CVSS score of CVE-2026-26117?

CVE-2026-26117 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

Which versions of Arc Enabled Servers Azure Connected Machine Agent are affected by CVE-2026-26117?

A privilege escalation vulnerability in Azure Windows Virtual Machine Agent could allow authorized users to gain elevated system access on affected VMs, potentially compromising sensitive workloads…. A patch is available.

How to fix or mitigate CVE-2026-26117?

Within 24 hours: Inventory all Azure Windows VMs and document which are business-critical; assess exposure by identifying users with local access. Within 7 days: Implement network segmentation to restrict local access vectors; review and enforce least-privilege IAM policies in Azure; disable unnecessary features on the VM agent if available. Within 30 days: Monitor Microsoft security advisories for patch availability and establish a rapid deployment process; conduct privilege access reviews on affected systems.

Arc Enabled Servers Azure Connected Machine Agent CVE-2026-26117

HIGH

Authentication Bypass Using an Alternate Path or Channel (CWE-288)

2026-03-10 secure@microsoft.com

Authentication Bypass Microsoft Arc Enabled Servers Azure Connected Machine Agent Windows

7.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.8 HIGH

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

CVE Published

Mar 10, 2026 - 18:18 nvd

HIGH 7.8

DescriptionCVE.org

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

AnalysisAI

Privilege escalation in Microsoft Azure Connected Machine Agent on Windows allows local authenticated users to bypass authentication mechanisms and gain elevated system privileges. An attacker with existing local access can exploit alternate authentication paths to escalate their permissions without user interaction. No patch is currently available for this vulnerability affecting Arc Enabled Servers.

Technical ContextAI

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