CVE-2026-20854High· 7.5▾ TwilightUse after free in Windows Local Security Authority Subsystem Service (LSASS) allows an authorized attacker to execute code over a network.
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0.2 · 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
1.0%
1.0% → 1.1%
Use after free in Windows Local Security Authority Subsystem Service (LSASS) allows an authorized attacker to execute code over a network.
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.
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