What is CVE-2026-42834?

CVE-2026-42834 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Windows Admin Center in Azure Portal Elevation of Privilege Vulnerability

Which CVE IDs does CVE-2026-42834 cover?

CVE-2026-42834 covers the following CVE IDs: CVE-2026-42834. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-42834?

CVE-2026-42834 has a CVSS v3 base score of 7.8, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-42834?

CVE-2026-42834 affects 1 product, including: Windows Admin Center in Azure Portal.

CVE-2026-42834HighCVSS 7.8

Windows Admin Center in Azure Portal Elevation of Privilege Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

May 22, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-42834 →

📋 Description

Improper access control in Windows Admin Center allows an authorized attacker to elevate privileges over a network.

🎯 Affected products1

Windows Admin Center in Azure Portal

✅ Remediation

KBRelease Notes (Security Update) — fixed build 0.72.0.0.

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42834
referencehttps://learn.microsoft.com/en-us/windows-server/manage/windows-admin-center/azure/extension-release-notes