CVE-2020-0789 Denial of service in Microsoft Visual Studio 2019
An attacker can cause a denial of service in the Visual Studio Extension Installer Service by exploiting improper hard link handling.
- 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-2020-0789?
CVE-2020-0789 is a high-severity denial of service vulnerability in Microsoft Visual Studio 2019, published on 12 Mar 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A denial of service vulnerability exists when the Visual Studio Extension Installer Service improperly handles hard links, aka 'Visual Studio Extension Installer Service Denial of Service Vulnerability'.
Weakness: CWE-59
Which versions are affected by CVE-2020-0789?
It affects 1 product.
Products include Microsoft Visual Studio 2019.
How do I fix CVE-2020-0789?
No fix has been published for CVE-2020-0789 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2020-0789 being exploited?
There is no known exploitation of CVE-2020-0789 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Visual Studio 2019
- CVE-2021-27068 Visual Studio Remote Code Execution Vulnerability
- CVE-2025-32702 Visual Studio Remote Code Execution Vulnerability
- CVE-2023-28262 Visual Studio Elevation of Privilege Vulnerability
- CVE-2025-25003 Visual Studio Elevation of Privilege Vulnerability
- CVE-2023-36759 Visual Studio Elevation of Privilege Vulnerability
Sources
Also known as GHSA-9p8g-4m8r-qpv5.