CVE-2026-42834 Windows Admin Center in Azure Portal Elevation of Privilege Vulnerability
An authorized attacker can elevate privileges over the network due to improper access control in Windows Admin Center.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-42834?
CVE-2026-42834 is a high-severity vulnerability in Microsoft Windows Admin Center in Azure Portal, published on 20 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Improper access control in Windows Admin Center allows an authorized attacker to elevate privileges over a network.
Weakness: CWE-59
Which versions are affected by CVE-2026-42834?
It affects 1 product.
Products include Microsoft Windows Admin Center.
How do I fix CVE-2026-42834?
No fix has been published for CVE-2026-42834 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-42834 being exploited?
There is no known exploitation of CVE-2026-42834 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows Admin Center in Azure Portal
- CVE-2026-62873 Microsoft 365 Admin Center Elevation of Privilege Vulnerability
- CVE-2019-0813 Privilege escalation in Windows Admin Center
- CVE-2026-56196 Windows Admin Center (WAC) Remote Code Execution Vulnerability
- CVE-2026-56197 Windows Admin Center (WAC) Remote Code Execution Vulnerability
- CVE-2026-41086 Windows Admin Center in Azure Portal Elevation of Privilege Vulnerability
Sources
Also known as GHSA-33pm-33cg-5576.