Microsoft Windows Cross Device Service Elevation of Privilege Vulnerability

🔗 CVE IDs covered (1)

📋 Description

🎯 Affected products9

• Windows 10 Version 22H2 for 32-bit Systems
• Windows 10 Version 22H2 for ARM64-based Systems
• Windows 10 Version 22H2 for x64-based Systems
• Windows 11 Version 24H2 for ARM64-based Systems
• Windows 11 Version 24H2 for x64-based Systems
• Windows 11 Version 25H2 for ARM64-based Systems
• Windows 11 Version 25H2 for x64-based Systems
• Windows 11 Version 26H1 for ARM64-based Systems
• Windows 11 version 26H1 for x64-based Systems

✅ Remediation

KB5120249 (Security Update) — fixed build 10.0.19045.7663 KB5121003 (Security Update) — fixed build 10.0.26200.9168 KB5120994 (Security Hotpatch Update) — fixed build 10.0.26200.9106 KB5121003 (Security Update) — fixed build 10.0.26100.9168 KB5120994 (Security Hotpatch Update) — fixed build 10.0.26100.9106 KB5121000 (Security Update) — fixed build 10.0.28000.2704

🔗 References (9)

• advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66804
• patchhttps://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5120249
• referencehttps://support.microsoft.com/help/5120249
• patchhttps://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5121003
• referencehttps://support.microsoft.com/help/5121003
• patchhttps://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5120994
• referencehttps://support.microsoft.com/help/5120994
• patchhttps://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5121000
• referencehttps://support.microsoft.com/help/5121000