Vulnerability in Microsoft Windows 11 Version 21h2
CVE-2023-21768
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
EPSS: 0.744 (98.9th 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/E:U/RL:O/RC:C.
Affected products
- Microsoft Windows 11 Version 21h2 — versions 10.0.0
- Microsoft Windows 11 Version 22h2 — versions 10.0.22621.0
- Microsoft Windows Server 2022 — versions 10.0.20348.0
Weakness classification (CWE)
Public proof-of-concept exploits
- chompie1337/Windows_LPE_AFD_CVE-2023-21768
- SamuelTulach/nullmap
- Malwareman007/CVE-2023-21768
- cl4ym0re/cve-2023-21768-compiled
- P4x1s/CVE-2023-21768-POC
- zoemurmure/CVE-2023-21768-AFD-for-WinSock-EoP-exploit
- xboxoneresearch/CVE-2023-21768-dotnet
- HKxiaoli/Windows_AFD_LPE_CVE-2023-21768
- h1bAna/CVE-2023-21768
- IlanDudnik/CVE-2023-21768
References
Frequently asked questions
- What is CVE-2023-21768?
- CVE-2023-21768 is a high-severity vulnerability in Microsoft Windows 11 Version 21h2, classified under Untrusted Pointer Dereference. CVSS score: 7.8/10. Published 2023-01-10.
- How severe is CVE-2023-21768?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2023-21768 known to be exploited?
- 80 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.