CVE-2026-20860

CVE Enrichment

CVSS: 7.8 HIGH
EPSS: 8.28%
EPSS Percentile: 94.80%
CISA KEV: Not listed

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

CVSS Version: 3.1
CNA / NVD Source: [email protected]
Published: 14-Jan-2026 01:16
Last Modified: 31-Jul-2026 04:17
EPSS Date: 2026-10-12
CWE: CWE-843

CVSS Vector


            CVSS:3.1                            AV:L /
                            AC:L /
                            PR:L /
                            UI:N /
                            S:U /
                            C:H /
                            I:H /
                            A:H

Affected Products / Versions

microsoft / windows_10_1607
Version / affected range: * · before (exclusive) 10.0.14393.8783
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:*
microsoft / windows_10_1607
Version / affected range: * · before (exclusive) 10.0.14393.8783
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*
microsoft / windows_10_1809
Version / affected range: * · before (exclusive) 10.0.17763.8276
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*
microsoft / windows_10_1809
Version / affected range: * · before (exclusive) 10.0.17763.8276
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*
microsoft / windows_10_21h2
Version / affected range: * · before (exclusive) 10.0.19044.6809
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:*
microsoft / windows_10_22h2
Version / affected range: * · before (exclusive) 10.0.19045.6809
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:*
microsoft / windows_11_23h2
Version / affected range: * · before (exclusive) 10.0.22631.6491
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:*
microsoft / windows_11_24h2
Version / affected range: * · before (exclusive) 10.0.26100.7623
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:*
microsoft / windows_11_25h2
Version / affected range: * · before (exclusive) 10.0.26200.7623
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:*:*
microsoft / windows_server_2008
Version / affected range: -
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x64:*
microsoft / windows_server_2008
Version / affected range: -
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x86:*
microsoft / windows_server_2008
Version / affected range: r2
cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
microsoft / windows_server_2012
Version / affected range: -
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
microsoft / windows_server_2012
Version / affected range: r2
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
microsoft / windows_server_2016
Version / affected range: * · before (exclusive) 10.0.14393.8783
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
microsoft / windows_server_2019
Version / affected range: * · before (exclusive) 10.0.17763.8276
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
microsoft / windows_server_2022
Version / affected range: * · before (exclusive) 10.0.20348.4648
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
microsoft / windows_server_2022_23h2
Version / affected range: * · before (exclusive) 10.0.25398.2092
cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:*
microsoft / windows_server_2025
Version / affected range: * · before (exclusive) 10.0.26100.32230
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*

References

[email protected]

Last enrichment sync: 24-Oct-2026 05:19
Sources: NVD · FIRST EPSS · CISA KEV
Latest successful provider update; providers refresh independently.

Reported Context (1)

CVE-2026-20860 Q1 2026 Threat Review Details Risks Facing U.S. Public Sector

CVE (5)

Threat Actors (2)

Vendors (7)

Products (6)

Tools (1)

Industries (4)

Countries (2)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.