CVE-2026-20860High· 7.8▾ TwilightAccess of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.9 · likelihood 1.7 · exploitation 0
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Exploit-prediction probability, daily snapshots since Aug 1.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
8.0%
8.0% → 8.4%
Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
windows_10_1607 < 10.0.14393.8783windows_10_1809 < 10.0.17763.8276windows_10_21h2 < 10.0.19044.6809windows_10_22h2 < 10.0.19045.6809windows_11_23h2 < 10.0.22631.6491windows_11_24h2 < 10.0.26100.7623windows_11_25h2 < 10.0.26200.7623windows_server_2008windows_server_2008 = r2windows_server_2012windows_server_2012 = r2windows_server_2016 < 10.0.14393.8783windows_server_2019 < 10.0.17763.8276windows_server_2022 < 10.0.20348.4648windows_server_2022_23h2 < 10.0.25398.2092windows_server_2025 < 10.0.26100.32230Upgrade past the affected range:
windows_10_1607 10.0.14393.8783windows_10_1809 10.0.17763.8276windows_10_21h2 10.0.19044.6809windows_10_22h2 10.0.19045.6809windows_11_23h2 10.0.22631.6491windows_11_24h2 10.0.26100.7623windows_11_25h2 10.0.26200.7623windows_server_2016 10.0.14393.8783windows_server_2019 10.0.17763.8276windows_server_2022 10.0.20348.4648windows_server_2022_23h2 10.0.25398.2092windows_server_2025 10.0.26100.32230Connected by shared product, vendor, weakness, or advisory.
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