PassMark PerformanceTest before 11.1 build 1012, BurnInTest before 11.1 build 1000, and OSForensics before 11.1 build 1016 contain an information disclosure vulnerability in DirectIo64.sys that allows unauthenticated local attackers to dump complete physical memory contents by supplying a caller-controlled file path to an exposed IOCTL. Attackers can issue a single IOCTL call to trigger the driver to iterate all physical memory ranges via MmGetPhysicalMemoryRanges and map each page through ZwMapViewOfSection on the PhysicalMemory section object, writing a full RAM image to an attacker-specified path in the SYSTEM context, bypassing user-mode ACLs and exposing LSASS working set, process memory, and cryptographic material from all running processes.

A critical information disclosure vulnerability exists in the DirectIo64.sys kernel driver used by PassMark PerformanceTest, BurnInTest, and OSForensics. Unauthenticated local attackers can exploit an exposed IOCTL to dump the entire physical memory contents to an attacker-controlled file path. The attack leverages MmGetPhysicalMemoryRanges and ZwMapViewOfSection to iterate and map all physical memory pages, writing a full RAM image in the SYSTEM context. This bypasses user-mode ACLs and exposes highly sensitive data including LSASS working sets, process memory, and cryptographic material from all running processes. The vulnerability requires no authentication and can be triggered with a single IOCTL call. Affected versions are PerformanceTest before 11.1 build 1012, BurnInTest before 11.1 build 1000, and OSForensics before 11.1 build 1016. Patches have been released by PassMark for all three products.