CVE-2023-21768 in the critical feed json
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
published 2023-01-10 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-25935
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 65.4%
- EPSS 65.4% chance of exploitation in 30 days, percentile 99.2%
- public exploits
- 1
- Metasploit
Summary
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
Patch / fix
- Microsoft Windows Server 2022 10.0.20348.1487
- Microsoft Windows 11 version 21H2 10.0.22000.1455
- Microsoft Windows 11 version 22H2 10.0.22621.1105
Timeline
- Published
- First public exploit (Metasploit exploit/windows/local/cve_2023_21768_afd_lpe)
- 0-day patched (Project Zero)
Zero-day
Detected in real attacks while still unknown to the vendor and the public, per Google Project Zero's 0day In-the-Wild tracker.
- Patched
- 2023-03-14
- Details
- project zero tracker
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 2 y ago
Exploit prediction
65.42% chance of exploitation in the next 30 days, higher than 99.2% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Metasploit exploit/windows/local/cve_2023_21768_afd_lpe Ancillary Function Driver (AFD) for WinSock Elevation of Privilege metasploit exploit, excellent rank, 2023-01-10
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.8 | 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 |
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Microsoft Windows Server 2022
- Microsoft Windows 11 version 21H2
- Microsoft Windows 11 version 22H2
Classification
- Weakness
-
- CWE-822 Untrusted Pointer Dereference
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2023-21768
vendor-advisory
Sources
- CVE List CVE-2023-21768
- NVD CVE-2023-21768
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.