CVE-2026-85818Critical· 9.0▾ MidnightImproper verification of cryptographic signature in Windows Schannel allows an unauthorized attacker to perform spoofing over a network.
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 49.5 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Oct 15.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.4%
Last analysed / modified upstream
Improper verification of cryptographic signature in Windows Schannel allows an unauthorized attacker to perform spoofing over a network.
windows_11_23h2 < 10.0.22631.7652windows_11_24h2 < 10.0.26100.9711windows_11_25h2 < 10.0.26200.9711windows_11_26h1 < 10.0.28000.3231windows_11_26h2 < 10.0.26300.9711windows_server_2022 < 10.0.20348.5761windows_server_2025 < 10.0.26100.33650Upgrade past the affected range:
windows_11_23h2 10.0.22631.7652windows_11_24h2 10.0.26100.9711windows_11_25h2 10.0.26200.9711windows_11_26h1 10.0.28000.3231windows_11_26h2 10.0.26300.9711windows_server_2022 10.0.20348.5761windows_server_2025 10.0.26100.33650Connected by shared product, vendor, weakness, or advisory.
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