CVE-2025-53717
High CVSS 7Published 2025-10-14 ยท last changed 2026-06-17
The fix
Microsoft fixes this in updatesKB5066793, KB5066835. The fixed build differs per Windows version, so the row that matters is the one matching the machine you are looking at.
| Windows version | Fixed in build | Update | Released |
|---|---|---|---|
| Windows 11 Version 22H2 for ARM64-based Systems | 10.0.22621.6060 | KB5066793 | 2026-09-19 |
| Windows 11 Version 22H2 for x64-based Systems | 10.0.22621.6060 | KB5066793 | 2026-09-19 |
| Windows 11 Version 23H2 for ARM64-based Systems | 10.0.22631.6060 | KB5066793 | 2026-09-19 |
| Windows 11 Version 23H2 for x64-based Systems | 10.0.22631.6060 | KB5066793 | 2026-09-19 |
| Windows 11 Version 24H2 for ARM64-based Systems | 10.0.26100.6899 | KB5066835 | 2026-09-19 |
| Windows 11 Version 24H2 for x64-based Systems | 10.0.26100.6899 | KB5066835 | 2026-09-19 |
| Windows 11 Version 25H2 for ARM64-based Systems | 10.0.26200.6899 | KB5066835 | 2026-09-19 |
| Windows 11 Version 25H2 for x64-based Systems | 10.0.26200.6899 | KB5066835 | 2026-09-19 |
Having the KB is not the same as knowing whether a machine has it. Windows updates supersede each other, so the update you installed often covers a fix that shipped in an earlier one. Paste your build into the patch checker and it walks that chain for you.
What it is
Reliance on untrusted inputs in a security decision in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to elevate privileges locally.
Sources
CVSS vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H