CVE-2023-21768

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2023-01-11. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
7.8
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 65%
CISA-KEV: Not listedEPSS: 65%CVSS: 7.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

CVSS v3
7.8
EG Score
7.8(medium)
EPSS
99.2%
KEV
Not listed

Published

January 10, 2023

Last Modified

November 21, 2024

References (2)

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 7× in last 7d / 28× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-22 14:06 UTCEPSS rescore
  2. 2026-07-21 15:23 UTCEPSS rescore
  3. 2026-07-20 17:05 UTCEPSS rescore
  4. 2026-07-19 02:27 UTCEPSS rescore
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  6. 2026-07-16 17:01 UTCEPSS rescore
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  8. 2026-07-15 16:56 UTCEPSS rescore
  9. 2026-07-13 22:28 UTCEPSS rescore
  10. 2026-07-13 22:28 UTCEPSS rescore
  11. 2026-07-12 05:45 UTCEPSS rescore
  12. 2026-07-12 05:45 UTCEPSS rescore
  13. 2026-07-11 08:25 UTCEPSS rescore
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  15. 2026-07-09 19:08 UTCEPSS rescore
  16. 2026-07-08 15:13 UTCEPSS rescore
  17. 2026-07-05 02:28 UTCEPSS rescore
  18. 2026-07-02 16:58 UTCEPSS rescore
  19. 2026-07-01 15:04 UTCEPSS rescore
  20. 2026-06-28 04:54 UTCEPSS rescore
  21. 2026-06-28 04:54 UTCEPSS rescore
  22. 2026-06-27 03:07 UTCEPSS rescore
  23. 2026-06-25 13:48 UTCEPSS rescore
  24. 2026-06-25 13:48 UTCEPSS rescore
  25. 2026-06-24 14:03 UTCEPSS rescore
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  1. 2026-06-24 14:03 UTCEPSS rescore
  2. 2026-06-23 21:31 UTCEPSS rescore
  3. 2026-06-23 21:31 UTCEPSS rescore
  4. 2026-06-21 01:58 UTCEPSS rescore
  5. 2026-06-21 01:58 UTCEPSS rescore
  6. 2026-06-18 17:51 UTCEPSS rescore
  7. 2026-06-18 17:51 UTCEPSS rescore
  8. 2026-06-17 17:51 UTCEPSS rescore
  9. 2026-06-17 17:51 UTCEPSS rescore
  10. 2026-06-16 17:51 UTCEPSS rescore
  11. 2026-06-16 17:51 UTCEPSS rescore
  12. 2026-06-16 17:51 UTCEPSS rescore
  13. 2026-06-15 17:47 UTCEPSS rescore
  14. 2026-06-13 22:59 UTCEPSS rescore
  15. 2026-06-12 23:10 UTCEPSS rescore
  16. 2026-06-11 13:59 UTCEPSS rescore
  17. 2026-06-11 13:58 UTCEPSS rescore
  18. 2026-06-10 22:17 UTCEPSS rescore
  19. 2026-06-10 13:21 UTCEPSS rescore
  20. 2026-06-10 13:21 UTCEPSS rescore
  21. 2026-06-08 14:15 UTCEPSS rescore
  22. 2026-06-08 14:15 UTCEPSS rescore
  23. 2026-06-07 15:23 UTCEPSS rescore
  24. 2026-06-07 15:23 UTCEPSS rescore
  25. 2026-06-05 22:46 UTCEPSS rescore
  26. 2026-06-05 22:46 UTCEPSS rescore
  27. 2026-06-05 22:46 UTCEPSS rescore
  28. 2026-06-05 06:09 UTCEPSS rescore
  29. 2026-06-05 06:09 UTCEPSS rescore
  30. 2026-06-04 13:11 UTCEPSS rescore
  31. 2026-06-04 13:11 UTCEPSS rescore
  32. 2026-06-02 20:12 UTCEPSS rescore
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  34. 2026-06-02 20:12 UTCEPSS rescore
  35. 2026-06-01 13:51 UTCEPSS rescore
  36. 2026-06-01 13:50 UTCEPSS rescore
  37. 2026-05-31 00:15 UTCEPSS rescore
  38. 2026-05-31 00:15 UTCEPSS rescore
  39. 2026-05-29 13:43 UTCEPSS rescore
  40. 2026-05-29 13:43 UTCEPSS rescore
  41. 2026-05-28 13:43 UTCEPSS rescore
  42. 2026-05-28 13:43 UTCEPSS rescore
  43. 2026-05-26 13:43 UTCEPSS rescore
  44. 2026-05-26 13:43 UTCEPSS rescore
  45. 2026-05-26 07:18 UTCEPSS rescore
  46. 2026-05-26 07:17 UTCEPSS rescore
  47. 2026-05-26 07:17 UTCEPSS rescore
  48. 2026-05-25 08:55 UTCEG score recompute
  49. 2026-05-25 08:55 UTCVendor advisory
  50. 2026-05-25 08:55 UTCGHSA enrichment

Publicly available exploits

(10 references)

Working exploit code is in the public domain (10 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCxboxoneresearch/CVE-2023-21768-dotnet
    First seen May 15, 2024

    C# / .NET version of CVE-2023-21768

    Open source ↗
  • GitHub PoCzoemurmure/CVE-2023-21768-AFD-for-WinSock-EoP-exploit
    First seen Apr 20, 2023
    Open source ↗
  • GitHub PoCahiahai242/CVE-2023-21768
    First seen Apr 5, 2023
    Open source ↗
  • GitHub PoCh1bAna/CVE-2023-21768
    First seen Apr 5, 2023
    Open source ↗
  • GitHub PoCP4x1s/CVE-2023-21768-POC
    First seen Mar 22, 2023

    CVE-2023-21768 Windows 11 22H2 系统本地提权 POC

    Open source ↗
  • GitHub PoCHKxiaoli/Windows_AFD_LPE_CVE-2023-21768
    First seen Mar 21, 2023

    Windows 11 System Permission Elevation

    Open source ↗
  • GitHub PoCMalwareman007/CVE-2023-21768
    First seen Mar 13, 2023

    Windows_AFD_LPE_CVE-2023-21768

    Open source ↗
  • GitHub PoCcl4ym0re/cve-2023-21768-compiled
    First seen Mar 10, 2023

    cve-2023-21768

    Open source ↗
  • GitHub PoCSamuelTulach/nullmap
    First seen Mar 10, 2023

    Using CVE-2023-21768 to manual map kernel mode driver

    Open source ↗
  • GitHub PoCchompie1337/Windows_LPE_AFD_CVE-2023-21768
    First seen Mar 7, 2023

    LPE exploit for CVE-2023-21768

    Open source ↗

Frequently asked(5)

What is CVE-2023-21768?
CVE-2023-21768 is a high vulnerability published on January 10, 2023. Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
When was CVE-2023-21768 disclosed?
CVE-2023-21768 was first published in the National Vulnerability Database on January 10, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-21768 actively exploited?
CVE-2023-21768 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-21768?
CVE-2023-21768 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2023-21768?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-21768, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2023-21768

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