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Azure HorizonDB EUVD-2026-34333

| CVE-2026-48567 CRITICAL
Authentication Bypass by Spoofing (CWE-290)
2026-06-04 microsoft GHSA-xmr7-v6qh-4cp6
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:N/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Jun 04, 2026 - 23:00 vuln.today
CVE Published
Jun 04, 2026 - 22:00 nvd
CRITICAL 10.0

DescriptionNVD

Authentication bypass by spoofing in Azure HorizonDB allows an unauthorized attacker to elevate privileges over a network.

AnalysisAI

Privilege elevation in Microsoft Azure HorizonDB allows remote unauthenticated attackers to bypass authentication via identity spoofing and gain elevated access across trust boundaries. The CVSS 10.0 score reflects network-reachable exploitation with no privileges or user interaction required, and a scope change indicating impact beyond the initially vulnerable component. …

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RemediationAI

Within 24 hours: Identify all Azure HorizonDB instances in your environment and immediately apply the Microsoft-released patch available via MSRC; review access logs for suspicious activity during the unpatched window. Within 7 days: Verify patch deployment across all instances and conduct forensic analysis of authentication events for exploitation indicators. …

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EUVD-2026-34333 vulnerability details – vuln.today

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