Vulnerability in Microsoft Windows 10
CVE-2021-43893
Windows Encrypting File System (EFS) Elevation of Privilege Vulnerability
EPSS: 0.066 (93.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Microsoft Windows_10 — versions 20h2, 21h1, 21h2
- Microsoft Windows 10 Version 1507 — versions 10.0.0
- Microsoft Windows 10 Version 1607 — versions 10.0.0
- Microsoft Windows 10 Version 1809 — versions 10.0.0
- 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 10 Version 21h2 — versions 10.0.0
- Microsoft Windows_11
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secure@microsoft.com (Patch, x_refsource_MISC, Vendor Advisory)
- secure@microsoft.com (VDB Entry, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-43893?
- CVE-2021-43893 is a high-severity vulnerability in Microsoft Windows 10, classified under Exposure of Resource to Wrong Sphere. CVSS score: 7.5/10. Published 2021-12-15.
- How severe is CVE-2021-43893?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-43893 known to be exploited?
- 15 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.