What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-04 · updated 2026-09-08
• Weakness: CWE-732

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.

Affected products

• PassMark Software BurnInTest: before 11.1 build 1000 — fixed in 11.1 build 1000
• PassMark Software OSForensics: before 11.1 build 1016 — fixed in 11.1 build 1016
• PassMark Software PerformanceTest: before 11.1 build 1012 — fixed in 11.1 build 1012

How to fix

Upgrade to a fixed version: PassMark Software BurnInTest 11.1 build 1000; PassMark Software OSForensics 11.1 build 1016; PassMark Software PerformanceTest 11.1 build 1012. Check the vendor advisory for mitigations.

References

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

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