CVE-2024-38163
High CVSS 7.8Published 2024-08-14 ยท last changed 2026-06-17
The fix
Microsoft fixes this in updatesKB5042320, KB5042321, KB5042322. 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 10 Version 21H2 for 32-bit Systems | 10.0.19041.3920 | KB5042320 | 2026-09-24 |
| Windows 10 Version 21H2 for x64-based Systems | 10.0.19041.3920 | KB5042320 | 2026-09-24 |
| Windows 10 Version 22H2 for 32-bit Systems | 10.0.19041.3920 | KB5042320 | 2026-09-24 |
| Windows 10 Version 22H2 for x64-based Systems | 10.0.19041.3920 | KB5042320 | 2026-09-24 |
| Windows 11 version 21H2 for x64-based Systems | 10.0.22000.2710 | KB5042321 | 2026-09-24 |
| Windows Server 2022 | 10.0.20348.2201 | KB5042322 | 2026-09-24 |
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
Windows Update Stack Elevation of Privilege Vulnerability
Sources
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H