Vulnerability · NVD
CVE-2026-66804
HIGH 7.8
Vendor bulletin scale — NVD CVSS pending
Microsoft Windows Cross Device Service Elevation of Privilege Vulnerability
OS versions that fix this CVE
This CVE is resolved by the following OS security releases. Update the OS to at least the listed version.
- Windows 11 26H1 · 2026-H1 Fixed in 10.0.28000.2704
- Windows 11 25H2 · 2025-H2 Fixed in 10.0.26200.9168
- Windows 11 24H2 · 2024-H2 Fixed in 10.0.26100.9168
- Windows 10 22H2 · 2022-H2 Fixed in 10.0.19045.7663