Affected: Microsoft Windows 10 Version 1809, Microsoft Windows 10 Version 1909, Microsoft Windows 10 Version 1903 for ARM64-based Systems, Microsoft Windows 10 Version 2004

An information disclosure vulnerability exists on ARM implementations that use speculative execution in control flow via a side-channel analysis, aka "straight-line speculation." To exploit this vulnerability, an attacker with local privileges would need to run a specially crafted application. The security update addresses the vulnerability by bypassing the speculative execution.