CVE-2026-80115PassMark PerformanceTest, BurnInTest, and OSForensics Kernel Crash via DirectIo64.sys MSR Write IOCTL
Updated under an hour ago ()
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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.
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Free account, 1 product
PassMark PerformanceTest before 11.1 build 1012, BurnInTest before 11.1 build 1000, and OSForensics before 11.1 build 1016 contain a privilege escalation and denial-of-service vulnerability in DirectIo64.sys that allows local attackers to read arbitrary Model-Specific Registers or write zero to any MSR through exposed IOCTLs with insufficient blocklist enforcement. Attackers can exploit the unrestricted write IOCTL to zero out the system call handler MSR, causing an immediate unrecoverable kernel crash on the next system call, or read security-sensitive MSRs used to locate kernel data structures.
- CVSS
- 6.1 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/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
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
- https://github.com/floppywiggler/directio64-disclosuretechnical-description, exploit
- https://www.passmark.com/products/performancetest/history.phprelease-notes, patch
- https://www.passmark.com/products/burnintest/history.phprelease-notes, patch
- https://www.osforensics.com/whats-new.htmlrelease-notes, patch
- https://dkom.dev/posts/directio64-disclosure/technical-description
- https://www.vulncheck.com/advisories/passmark-performancetest-burnintest-and-osforensics-kernel-crash-via-directio64-sys-msr-write-ioctlthird-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.