CVE-2026-65816 Azure Arc Elevation of Privilege Vulnerability

Critical 10.0 Published 20 Aug 2026 Updated 28 Oct 2026

An attacker can elevate privileges in Azure Arc due to incorrect name resolution, requiring a patch to mitigate the risk.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-65816?

CVE-2026-65816 is a critical vulnerability in Microsoft Azure Web Apps, published on 20 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Use of incorrectly-resolved name or reference in Azure Arc allows an unauthorized attacker to elevate privileges over a network.

Weakness: CWE-706

Which versions are affected by CVE-2026-65816?

It affects 1 product.

Products include Microsoft Azure Web Apps.

How do I fix CVE-2026-65816?

No fix has been published for CVE-2026-65816 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-65816 being exploited?

There is no known exploitation of CVE-2026-65816 in the wild and no public exploit code.

Sources

Also known as GHSA-mxqx-57v7-6jqc.