CVE-2023-21815 Visual Studio Remote Code Execution Vulnerability

High 7.8 Published 14 Feb 2023 Updated 19 Aug 2026

An integer overflow in Microsoft Visual Studio allows attackers to execute arbitrary code, requiring users to apply vendor patches.

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-2023-21815?

CVE-2023-21815 is a high-severity vulnerability in Microsoft Visual Studio 2017, published on 14 Feb 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Visual Studio Remote Code Execution Vulnerability

Weakness: CWE-191

Which versions are affected by CVE-2023-21815?

It affects 3 products.

Products include Microsoft Visual Studio 2017, Microsoft Visual Studio 2019, Microsoft Visual Studio 2022.

How do I fix CVE-2023-21815?

No fix has been published for CVE-2023-21815 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-21815 being exploited?

There is no known exploitation of CVE-2023-21815 in the wild and no public exploit code.

All Microsoft Visual Studio 2017 vulnerabilities

Sources

Also known as GHSA-mj27-g8rm-4w5r.