Privilege escalation in Microsoft Windows 10
CVE-2021-31961
Windows InstallService Elevation of Privilege Vulnerability
Vulnerability class: Privilege Escalation
EPSS: 0.007 (51.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H.
Affected products
- Microsoft Windows_10 — versions 20h2, 21h1, 1809
- Microsoft Windows 10 Version 1809 — versions 10.0.0, 10.0.17763.0
- Microsoft Windows 10 Version 1909 — versions 10.0.0
- Microsoft Windows 10 Version 2004 — versions 10.0.0
- Microsoft Windows 10 Version 20h2 — versions 10.0.0
- Microsoft Windows 10 Version 21h1 — versions 10.0.0
- Microsoft Windows_server_2016 — versions 20h2, 2004
- Microsoft Windows Server 2019 — versions 10.0.0, 10.0.17763.0
- Microsoft Windows_server_2019
- Microsoft Windows Server 2019 (Server Core Installation) — versions 10.0.0, 10.0.17763.0
Weakness classification (CWE)
References
- af854a3a-2127-422b-91ae-364da2661108 (Patch, x_refsource_MISC, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (x_refsource_MISC, Third Party Advisory, VDB Entry)
- secure@microsoft.com (vendor-advisory, patch)
Frequently asked questions
- What is CVE-2021-31961?
- CVE-2021-31961 is a medium-severity vulnerability in Microsoft Windows 10, classified under Improper Privilege Management. CVSS score: 6.1/10. Published 2021-07-14.
- How severe is CVE-2021-31961?
- Medium severity. CVSS v3 base score is 6.1 out of 10.