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Azure Resource Manager CVE-2026-47280

| EUVD-2026-31514 CRITICAL
Improper Authentication (CWE-287)
2026-05-22 microsoft GHSA-q9gj-2hh6-3882
10.0
CVSS 3.1
Temporal: 8.7
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CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

1
Analysis Generated
May 22, 2026 - 22:47 vuln.today

DescriptionNVD

Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a network.

AnalysisAI

Privilege elevation in Microsoft Azure Resource Manager (ARM) allows remote unauthenticated attackers to bypass authentication and gain elevated privileges across the cloud control plane. The flaw carries a maximum CVSS score of 10.0 due to a scope change combined with full confidentiality, integrity, and availability impact, and although Microsoft has released a fix there is no public exploit identified at time of analysis. …

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RemediationAI

Within 24 hours: Identify all Azure subscriptions and initiate emergency patching of Azure Resource Manager components through Azure Update Management and partner portals; confirm vendor patch deployment before returning to normal operations. Within 7 days: Audit Azure access logs for anomalous privilege escalation or administrative activity during the exposure window; isolate and analyze any suspicious role assignments or resource access. …

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CVE-2026-47280 vulnerability details – vuln.today

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