CVE-2026-45657: windows 11 23h2 vulnerability

Use after free in Windows Kernel allows an unauthorized attacker to execute code over a network.
CVE-2026-45657CVSS 9.8Windows

CVE-2026-45657: windows 11 23h2 vulnerability

Use after free in Windows Kernel allows an unauthorized attacker to execute code over a network.

CVSS
9.8 CRITICAL
EPSS
96.4%
Known exploited
not in KEV
Product
windows 11 23h2

What is known

Use after free in Windows Kernel allows an unauthorized attacker to execute code over a network.

Sources