CVE-2026-20810: Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
Microsoft · Windows 10 Version 1809
Vendor fix available · Affected: Microsoft Windows 10 Version 1809 · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 42% of scored CVEs
DescriptionCVE.org
Free of memory not on the heap in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
Affected products5
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Microsoft · Windows 10 Version 1809from 10.0.17763.0 before 10.0.17763.8276
- Microsoft · Windows 10 Version 21H2from 10.0.19044.0 before 10.0.19044.6809
- Microsoft · Windows 10 Version 22H2from 10.0.19045.0 before 10.0.19045.6809
- Microsoft · Windows Server 2019from 10.0.17763.0 before 10.0.17763.8276
- Microsoft · Windows Server 2019 (Server Core installation)from 10.0.17763.0 before 10.0.17763.8276
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- Microsoft
- Published
- January 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-20810 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.