Microsoft recently bolstered HVCI with . This ensures that code can only jump to "valid" targets. This was a direct response to ROP-based HVCI bypasses, making it significantly harder to redirect the flow of execution to unauthorized functions.
Even if an attacker finds a vulnerability in a kernel driver, they cannot simply "allocate" new executable memory or change the permissions of existing memory because the hypervisor—which sits "below" the Windows OS—will block the request. Why Target HVCI? Hvci Bypass
HVCI uses Second Level Address Translation (SLAT) to mark memory pages. Microsoft recently bolstered HVCI with
is a feature that uses the Windows hypervisor to prevent unauthorized code from running in the kernel. In a standard environment, the kernel decides what code is valid. However, if the kernel itself is compromised, an attacker can simply tell the kernel to stop checking signatures. Even if an attacker finds a vulnerability in
Knowing the specific Windows version and hardware specs (like MBEC support) is crucial for determining which bypass vectors are still viable.