CVE-2025-55334

A Windows Kernel security feature bypass here carries a Critical 9.9 rating, among the highest in this batch, spanning Windows 11 25H2 and 22H2 ARM64 systems, though its EPSS score is a modest 6 percent. Kernel-level security feature bypasses can undermine protections like driver signing enforcement, so the severity score is doing real work here even without a high predicted exploitation probability. It has not been confirmed exploited or tied to ransomware.

Do this: Patch Windows 11 25H2 and 22H2 ARM64 devices for this kernel bypass on its severity alone, without waiting for a rise in exploitation signals.

AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.