CVE-2026-80119: PassMark PerformanceTest, BurnInTest, and OSForensics Physical Memory Disclosure via DirectIo64.sys IOCTL
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.
Affected Software
Event History
Frequently Asked Questions
Who can exploit this issue?
A local attacker who can access the exposed DirectIo64.sys IOCTL can exploit it without authentication. The attacker needs only low privileges and does not need user interaction.
What does successful exploitation expose?
The vulnerable driver can write a complete physical-memory image to an attacker-controlled file path while running in the SYSTEM context. This can expose LSASS working-set data, memory from all running processes, and cryptographic material.
Which releases are affected?
Affected releases are PerformanceTest before 11.1 build 1012, BurnInTest before 11.1 build 1000, and OSForensics before 11.1 build 1016.
Why do file permissions not prevent the memory dump?
The driver writes the dump in the SYSTEM context, bypassing user-mode ACL restrictions on the chosen output path. The file path supplied to the IOCTL is attacker-controlled.