CVE-2026-80117
CVE-2026-80117
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (5.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 5th percentile — 5.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.001
Weakness classification (CWE)
References
- Technical Analysis and Decompiled Evidence (technical-description)
- Researcher Disclosure (technical-description)
- OSForensics Changelog (release-notes, patch)
- BurnInTest Changelog (release-notes, patch)
- PerformanceTest Changelog (release-notes, patch)
- www.vulncheck.com/advisories/passmark-performancetest-burnintest-and-osforensic… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-80117?
- CVE-2026-80117 is a high-severity vulnerability, classified under CWE-782. CVSS score: 7.1/10. Published 2026-09-04.
- How severe is CVE-2026-80117?
- High severity. CVSS v3 base score is 7.1 out of 10.