CVE-2026-80117

Summary

PassMark PerformanceTest before 11.1 build 1012, BurnInTest before 11.1 build 1000, and OSForensics before 11.1 build 1016 contain a privilege escalation vulnerability in DirectIo64.sys that allows local users to issue arbitrary IN and OUT instructions to any x86 I/O port due to missing allowlist or port validation on exposed IOCTLs. Attackers can obtain a device handle and write to sensitive ports including the PS/2 controller port, CPU reset ports, CMOS configuration ports, and interrupt controller ports to cause an immediate system reset or other hardware-level manipulation from a standard user account.

Affected Software

Weaknesses

• CWE-782: Exposed IOCTL with Insufficient Access Control

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: total

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-arbitrary-i-o-port-access-via-directio64-sys

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