CVE-2026-83780: Use after free in Windows CCFFilter Driver allows an unauthorized attacker to execute code over a network.

PriorityP260critical9.8CVSS 3.1

AVNACLPRNUINSUCHIHAH

EPSS

0.96%

61.2th percentile

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

Affected

6 ranges

Vendor	Product	Version range	Fixed in
microsoft	windows_10_version_1607	>= 10.0.14393.0 < 10.0.14393.9612	10.0.14393.9612
microsoft	windows_10_version_1809	>= 10.0.17763.0 < 10.0.17763.9376	10.0.17763.9376
microsoft	windows_server_2016	>= 10.0.14393.0 < 10.0.14393.9612	10.0.14393.9612
microsoft	windows_server_2019	>= 10.0.17763.0 < 10.0.17763.9376	10.0.17763.9376
microsoft	windows_server_2022	>= 10.0.20348.0 < 10.0.20348.5761	10.0.20348.5761
microsoft	windows_server_2025	>= 10.0.26100.0 < 10.0.26100.33650	10.0.26100.33650

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