Vulnerability · Published Sep 4, 2026 · Assigned by VulnCheck
CVE-2026-80113PassMark PerformanceTest, BurnInTest, and OSForensics Arbitrary Bit Clear via DirectIo64.sys IOCTL
High 7.1
In plain English
A high-severity out-of-bounds write in BurnInTest from PassMark Software. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities).
Official 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 clear arbitrary bits at any physical memory address due to missing validation of the physical address parameter in an exposed IOCTL handler. Attackers can obtain a device handle and supply an arbitrary 64-bit physical address with a bit index to invoke MmMapIoSpace and clear bits in kernel code pages or page table entries, enabling local privilege escalation or system compromise.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| PassMark Software | PerformanceTest | 0 – before 11.1 build 1012 |
| PassMark Software | BurnInTest | 0 – before 11.1 build 1000 |
| PassMark Software | OSForensics | 0 – before 11.1 build 1016 |
Weakness: CWE-782, CWE-787 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
References
- Researcher Disclosure technical-description, exploit
- PerformanceTest Changelog release-notes, patch
- BurnInTest Changelog release-notes, patch
- OSForensics Changelog release-notes, patch
- Technical Analysis and Decompiled Evidence technical-description
- https://www.vulncheck.com/advisories/passmark-performancetest-burnintest-and-osforensics-arbitrary-bit-clear-via-directio64-sys-ioctl third-party-advisory