vulnerability
Microsoft Windows: CVE-2021-38634: Microsoft Windows Update Client Elevation of Privilege Vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:L/Au:N/C:C/I:C/A:C) | Sep 14, 2021 | Sep 14, 2021 | Sep 5, 2025 |
Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
Sep 14, 2021
Added
Sep 14, 2021
Modified
Sep 5, 2025
Description
Microsoft Windows Update Client Elevation of Privilege Vulnerability
Solutions
microsoft-windows-windows_10-1507-kb5005569microsoft-windows-windows_10-1607-kb5005573microsoft-windows-windows_10-1809-kb5005568microsoft-windows-windows_10-1909-kb5005566microsoft-windows-windows_10-2004-kb5005565microsoft-windows-windows_10-20h2-kb5005565microsoft-windows-windows_10-21h1-kb5005565microsoft-windows-windows_server_2016-1607-kb5005573microsoft-windows-windows_server_2019-1809-kb5005568microsoft-windows-windows_server_2022-21h2-kb5005575microsoft-windows-windows_server_2022-22h2-kb5005575msft-kb5005565-2ab61f5f-8761-4804-91cf-dbc91f70696bmsft-kb5005565-974eb306-66c8-438b-abf9-7c9c257b1440
References
- CVE-2021-38634
- https://attackerkb.com/topics/CVE-2021-38634
- CWE-269
- https://support.microsoft.com/help/5005565
- https://support.microsoft.com/help/5005566
- https://support.microsoft.com/help/5005568
- https://support.microsoft.com/help/5005569
- https://support.microsoft.com/help/5005573
- https://support.microsoft.com/help/5005575
Rapid7 Labs
2026 Global Threat Landscape Report
The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.