CVE-2026-20860
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
CVSS v3
7.8
HIGH
EPSS Score
8.4 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
none
SSVC status
Description
Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
Technical details
- Published
- 2026-01-13
- Last Modified
- 2026-01-15
Frequently asked questions
What is CVE-2026-20860?
Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
Is CVE-2026-20860 actively exploited?
Active exploitation of CVE-2026-20860 has not been confirmed. Its EPSS score was 8.4% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2026-20860?
CVE-2026-20860 has a CVSS v3 base score of 7.8 (HIGH severity).
Is CVE-2026-20860 affecting your environment?
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