CVE-2021-42277 Diagnostics Hub Standard Collector Elevation of Privilege Vulnerability

Medium 5.5 Published 10 Nov 2021 Updated 19 Aug 2026

An attacker can exploit the Diagnostics Hub Standard Collector to elevate privileges on systems running Microsoft Visual Studio.

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-2021-42277?

CVE-2021-42277 is a medium-severity vulnerability in Microsoft Visual Studio, published on 10 Nov 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Diagnostics Hub Standard Collector Elevation of Privilege Vulnerability

Weakness: CWE-269

Which versions are affected by CVE-2021-42277?

It affects 8 products.

Products include Microsoft Visual Studio, Microsoft Visual Studio 2017, Microsoft Visual Studio 2019, Microsoft Windows 10, Microsoft Windows 11, Microsoft Windows Server 2016 and 2 more.

How do I fix CVE-2021-42277?

No fix has been published for CVE-2021-42277 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-42277 being exploited?

There is no known exploitation of CVE-2021-42277 in the wild and no public exploit code.

All Microsoft Visual Studio vulnerabilities

Sources

Also known as GHSA-p3rm-m944-qxgv.