{"id":"CVE-2026-80117","title":"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 O…","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 O…","severity":"high","cvss":7.1,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","cwe":["CWE-782"],"published":"2026-09-04","updated":"2026-09-08","sourceUpdated":"2026-09-08T20:10:30.270","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-80117","references":[{"url":"https://dkom.dev/posts/directio64-disclosure/","label":"disclosure@vulncheck.com"},{"url":"https://github.com/floppywiggler/directio64-disclosure","label":"disclosure@vulncheck.com"},{"url":"https://www.osforensics.com/whats-new.html","label":"disclosure@vulncheck.com"},{"url":"https://www.passmark.com/products/burnintest/history.php","label":"disclosure@vulncheck.com"},{"url":"https://www.passmark.com/products/performancetest/history.php","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/passmark-performancetest-burnintest-and-osforensics-arbitrary-i-o-port-access-via-directio64-sys","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"epss":0.00163,"epssPercentile":0.0483,"ingestedAt":"2026-09-08T21:11:12.295Z","slug":"CVE-2026-80117","body":"## Overview\n\nPassMark 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":39.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}