CVEvulnerability
CVE-2026-80117
6.9 MEDIUM
Official page ↗
- Status
- Awaiting Analysis
- Published
- 2026-09-04
- Last modified
- 2026-09-08
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 6.9 MEDIUM — CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- CVSS 3.1 ([email protected])
- 7.1 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
- Weaknesses
- CWE-782
Description
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.
Related
Weakness · CWE (1)
- CWE-782 Exposed IOCTL with Insufficient Access Control weakness
References
- https://dkom.dev/posts/directio64-disclosure/ dkom.dev
- https://github.com/floppywiggler/directio64-disclosure github.com
- https://www.osforensics.com/whats-new.html www.osforensics.com
- https://www.passmark.com/products/burnintest/history.php www.passmark.com
- https://www.passmark.com/products/performancetest/history.php www.passmark.com
- https://www.vulncheck.com/advisories/passmark-performancetest-burnintest-and-osforensics-arbitrary-i-o-port-access-via-directio64-sys www.vulncheck.com