Auth bypass in Microsoft Windows 10
CVE-2023-21817
Windows Kerberos Elevation of Privilege Vulnerability
Vulnerability class: Broken Authentication
EPSS: 0.008 (52.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Microsoft Windows_10
- Microsoft Windows_10_1607
- Microsoft Windows_10_1809
- Microsoft Windows_10_20h2
- Microsoft Windows_10_21h2
- Microsoft Windows_10_22h2
- Microsoft Windows 10 Version 1507 — versions 10.0.10240.0
- Microsoft Windows 10 Version 1607 — versions 10.0.14393.0
- Microsoft Windows 10 Version 1809 — versions 10.0.17763.0, 10.0.0
- Microsoft Windows 10 Version 20h2 — versions 10.0.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secure@microsoft.com (vendor-advisory, Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2023-21817?
- CVE-2023-21817 is a high-severity vulnerability in Microsoft Windows 10, classified under Improper Authentication. CVSS score: 7.8/10. Published 2023-02-14.
- How severe is CVE-2023-21817?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2023-21817 known to be exploited?
- 21 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.