CVE-2026-20859High· 7.8▾ TwilightUse after free in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.9 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Jul 31.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.5%
0.5% → 0.5%
Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.
windows_11_24h2 < 10.0.26100.7623windows_11_25h2 < 10.0.26200.7623windows_server_2025 < 10.0.26100.32230Upgrade past the affected range:
windows_11_24h2 10.0.26100.7623windows_11_25h2 10.0.26200.7623windows_server_2025 10.0.26100.32230Connected by shared product, vendor, weakness, or advisory.
CVE-2026-78457High· 7.0Use after free in Windows Security Health Service allows an authorized attacker to elevate privileges locally.
CVE-2026-77899High· 7.0Use after free in Windows Security Center allows an authorized attacker to elevate privileges locally.
CVE-2026-69896High· 7.0Use after free in Windows Error Reporting allows an authorized attacker to elevate privileges locally.
CVE-2026-69818High· 7.0Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.
CVE-2026-69422High· 7.0Use after free in Windows USB Video Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-69333High· 7.0Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.