CVE-2026-80083: Windows Hyper-V Remote Code Execution Vulnerability
Untrusted pointer dereference in Windows Hyper-V allows an authorized attacker to execute code locally.
Other sources
Windows Hyper-V Remote Code Execution Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.9445Patch KB5124008 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.28000.2954Patch KB5124012 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.33438Patch KB5122871 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.22631.7582Patch KB5122880 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26200.9445Patch KB5124008 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5622Patch KB5122882
Event History
Frequently Asked Questions
What level of access does an attacker need to exploit this vulnerability?
An attacker must already be authorized on the affected system and have local access. No user interaction is required.
Which systems are identified as affected?
The affected software listed is Microsoft Windows 11, Microsoft Windows Server 2022, and Microsoft Windows Server 2025.
What is the potential impact of successful exploitation?
Successful exploitation can allow code execution and has high impacts on confidentiality, integrity, and availability. The vulnerability has a scope change, meaning the security impact can extend beyond the initially affected security authority.