CVE-2026-72940High· 8.8▾ TwilightHeap-based buffer overflow in Windows Schannel allows an unauthorized attacker to execute code over a network.
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 48.4 · likelihood 0.2 · 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 Sep 9.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.8%
Last analysed / modified upstream
Heap-based buffer overflow in Windows Schannel allows an unauthorized attacker to execute code over a network.
windows_11_23h2 < 10.0.22631.7582windows_11_24h2 < 10.0.26100.9445windows_11_25h2 < 10.0.26200.9445windows_11_26h1 < 10.0.28000.2954windows_server_2022 < 10.0.20348.5622windows_server_2025 < 10.0.26100.33438Upgrade past the affected range:
windows_11_23h2 10.0.22631.7582windows_11_24h2 10.0.26100.9445windows_11_25h2 10.0.26200.9445windows_11_26h1 10.0.28000.2954windows_server_2022 10.0.20348.5622windows_server_2025 10.0.26100.33438Connected by shared product, vendor, weakness, or advisory.
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CVE-2026-85880High· 7.8Heap-based buffer overflow in Windows ALPC allows an authorized attacker to elevate privileges locally.
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CVE-2026-84000High· 7.8Heap-based buffer overflow in Microsoft Graphics Component allows an authorized attacker to execute code locally.
CVE-2026-83998High· 8.8Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.