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Windows CVE-2026-26117

HIGH
Authentication Bypass Using an Alternate Path or Channel (CWE-288)
2026-03-10 secure@microsoft.com
7.8
CVSS 3.1
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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

2
Analysis Generated
Mar 12, 2026 - 21:55 vuln.today
CVE Published
Mar 10, 2026 - 18:18 nvd
HIGH 7.8

DescriptionNVD

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. …

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RemediationAI

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. …

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CVE-2026-26117 vulnerability details – vuln.today

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