CVE-2026-80083 Windows Hyper-V Remote Code Execution Vulnerability
An authorized attacker can execute code locally via an untrusted pointer dereference in Windows Hyper-V.
- 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-2026-80083?
CVE-2026-80083 is a high-severity vulnerability in Microsoft Windows 11 23h2, published on 8 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Untrusted pointer dereference in Windows Hyper-V allows an authorized attacker to execute code locally.
Weakness: CWE-822
Which versions are affected by CVE-2026-80083?
It affects 6 products.
Products include Microsoft Windows 11 23h2, Microsoft Windows 11 24h2, Microsoft Windows 11 25h2, Microsoft Windows 11 26h1, Microsoft Windows Server 2022, Microsoft Windows Server 2025.
How do I fix CVE-2026-80083?
No fix has been published for CVE-2026-80083 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-80083 being exploited?
There is no known exploitation of CVE-2026-80083 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows 11 23h2
- CVE-2026-81963 Microsoft Windows Link Following
- CVE-2026-100219 Microsoft QUIC Remote Code Execution Vulnerability
- CVE-2026-96909 Windows BitLocker Remote Code Execution Vulnerability
- CVE-2026-62815 Microsoft QUIC Remote Code Execution Vulnerability
- CVE-2026-45657 Windows Kernel Remote Code Execution Vulnerability
Sources
Also known as GHSA-f9h2-796f-g2cx.