High 7.1Published Sep 4, 2026

CVE-2026-80117PassMark PerformanceTest, BurnInTest, and OSForensics Arbitrary I/O Port Access via DirectIo64.sys

Updated under an hour ago (Oct 27, 2026, 6:30 PM ET)

Does this affect you?

It affects PassMark Software PerformanceTest and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for PassMark Software PerformanceTest

Exploited in the last 30 days

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.

CVSS: 7.1 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Weakness (CWE): CWE-782
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Awaiting Analysis
Record last updated: Oct 1, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

PassMark Software PerformanceTest passmark_software:performancetest (from the name)	before 11.1 build 1012	CNA record
PassMark Software BurnInTest passmark_software:burnintest (from the name)	before 11.1 build 1000	CNA record
PassMark Software OSForensics passmark_software:osforensics (from the name)	before 11.1 build 1016	CNA record

References

References

https://github.com/floppywiggler/directio64-disclosure	technical-description
https://www.passmark.com/products/performancetest/history.php	release-notes, patch
https://www.passmark.com/products/burnintest/history.php	release-notes, patch
https://www.osforensics.com/whats-new.html	release-notes, patch
https://dkom.dev/posts/directio64-disclosure/	technical-description
https://www.vulncheck.com/advisories/passmark-performancetest-burnintest-and-osforensics-arbitrary-i-o-port-access-via-directio64-sys	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.