CVE-2026-77906 Visual Studio Remote Code Execution Vulnerability
Heap-based buffer overflow in Visual Studio allows remote attackers to execute arbitrary code over the network.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-77906?
CVE-2026-77906 is a high-severity memory corruption vulnerability in Microsoft Visual Studio 2026 version 18.9, published on 8 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Heap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a network.
Weakness: CWE-122
Which versions are affected by CVE-2026-77906?
It affects 1 product.
Products include Microsoft Visual Studio 2026.
How do I fix CVE-2026-77906?
No fix has been published for CVE-2026-77906 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-77906 being exploited?
There is no known exploitation of CVE-2026-77906 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Visual Studio 2026 version 18.9
Sources
Also known as GHSA-8834-2x42-5wxx.