How severe is CVE-2024-38193?

CVE-2024-38193 has a CVSS 3.1 base score of 7.8 (HIGH). EPSS estimates a 28.7% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2024-38193: Windows Ancillary Function Driver for WinSock

CISA Known Exploited Vulnerabilities

Microsoft Windows Ancillary Function Driver for WinSock Privilege Escalation Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2024-08-13

Remediation due

2024-09-03

Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

CISA notes
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-38193; https://nvd.nist.gov/vuln/detail/CVE-2024-38193

Description

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

Severity

CVSS 3.1 · CNA7.8 HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C

SSVC · CISA-ADP

Exploitationactive

Automatableno

Technical impacttotal

Exploitation Context

as of October 17, 2026

All KEV statistics→

CISA added CVE-2024-38193 to the KEV catalog on the day its CVE record was published. The median for entries added in 2024 is 21.5 days.
It is one of 391 Microsoft entries in the CISA KEV catalog, and one of 36 added in 2024.
Its current EPSS score (28.7%) is higher than that of 41% of CISA KEV entries.

Affected Products

Vendor	Product	Affected versions
Microsoft	Microsoft Windows 11 Version 24H2	10.0.26100.0 to <10.0.26100.1457
Microsoft	Microsoft Windows 10 Version 1809	10.0.17763.0 to <10.0.17763.6189
Microsoft	Microsoft Windows Server 2019	10.0.17763.0 to <10.0.17763.6189
Microsoft	Microsoft Windows Server 2019 (Server Core installation)	10.0.17763.0 to <10.0.17763.6189
Microsoft	Microsoft Windows Server 2022	10.0.20348.0 to <10.0.20348.2655
Microsoft	Microsoft Windows 11 version 21H2	10.0.0 to <10.0.22000.3147
Microsoft	Microsoft Windows 10 Version 21H2	10.0.19043.0 to <10.0.19044.4780
Microsoft	Microsoft Windows 11 version 22H2	10.0.22621.0 to <10.0.22621.4037
Microsoft	Microsoft Windows 10 Version 22H2	10.0.19045.0 to <10.0.19045.4780
Microsoft	Microsoft Windows 11 version 22H3	10.0.22631.0 to <10.0.22631.4037
Microsoft	Microsoft Windows 11 Version 23H2	10.0.22631.0 to <10.0.22631.4037
Microsoft	Microsoft Windows Server 2022, 23H2 Edition (Server Core installation)	10.0.25398.0 to <10.0.25398.1085
Microsoft	Microsoft Windows 10 Version 1507	10.0.10240.0 to <10.0.10240.20751
Microsoft	Microsoft Windows 10 Version 1607	10.0.14393.0 to <10.0.14393.7259
Microsoft	Microsoft Windows Server 2016	10.0.14393.0 to <10.0.14393.7259
Microsoft	Microsoft Windows Server 2016 (Server Core installation)	10.0.14393.0 to <10.0.14393.7259
Microsoft	Microsoft Windows Server 2008 Service Pack 2	6.0.6003.0 to <6.0.6003.22825
Microsoft	Microsoft Windows Server 2008 Service Pack 2 (Server Core installation)	6.0.6003.0 to <6.0.6003.22825
Microsoft	Microsoft Windows Server 2008 Service Pack 2	6.0.6003.0 to <6.0.6003.22825
Microsoft	Microsoft Windows Server 2008 R2 Service Pack 1	6.1.7601.0 to <6.1.7601.27277
Microsoft	Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation)	6.1.7601.0 to <6.1.7601.27277
Microsoft	Microsoft Windows Server 2012	6.2.9200.0 to <6.2.9200.25031
Microsoft	Microsoft Windows Server 2012 (Server Core installation)	6.2.9200.0 to <6.2.9200.25031
Microsoft	Microsoft Windows Server 2012 R2	6.3.9600.0 to <6.3.9600.22134
Microsoft	Microsoft Windows Server 2012 R2 (Server Core installation)	6.3.9600.0 to <6.3.9600.22134

References

2 Links

Vendor advisories

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

Other references

https://www.exploit-db.com/exploits/52284

Record Details

Published

2024-08-13

Last updated

2025-10-21

Assigner (CNA)

microsoft

Credited to

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Tool categories

Fuzzing Binary Exploitation

CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.

CVE-2024-38193