Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-80115

CVE-2026-80115MEDIUM

PassMark PerformanceTest, BurnInTest, and OSForensics Kernel Crash via DirectIo64.sys MSR Write IOCTL

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   L   L   N   L   N   L   N   H    6.9   .0015    3.8     —

AFFECTED
  Product          Versions     Fixed
  PerformanceTest  unspecified  —
  BurnInTest       unspecified  —
  OSForensics      unspecified  —

TIMELINE
  Aug 25  Reserved by VulnCheck
  Sep 4   Published (CNA: VulnCheck)
  Sep 14  EXPLOIT PUBLISHED — CVE-2026-80115 (PassMark Software PerformanceTest). Public exploit reference added.
  Oct 1   EXPLOIT PUBLISHED — CVE-2026-80115 (PassMark Software PerformanceTest). Public exploit reference added.

CWE-782 · CNA: VulnCheck · CVSS v4.0 · 6 references · NVD status: Awaiting Analysis

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 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.

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
August 25, 2026	Reserved	Reserved by VulnCheck
September 4, 2026	Published	Published (CNA: VulnCheck)
September 14, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-80115 (PassMark Software PerformanceTest). Public exploit reference added.
October 1, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-80115 (PassMark Software PerformanceTest). Public exploit reference added.

Affected

Affected products and packages — 3 rows
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
PassMark Software	PerformanceTest	—	—	—
PassMark Software	BurnInTest	—	—	—
PassMark Software	OSForensics	—	—	—

Weaknesses

CWE-782

References (6)

https://dkom.dev/posts/directio64-disclosure/ [technical-description]
https://github.com/floppywiggler/directio64-disclosure [technical-description, exploit]
https://www.osforensics.com/whats-new.html [release-notes, patch]
https://www.passmark.com/products/burnintest/history.php [release-notes, patch]
https://www.passmark.com/products/performancetest/history.php [release-notes, patch]
https://www.vulncheck.com/advisories/passmark-performancetest-burnintest-and-osforensics-kernel-crash-via-directio64-sys-msr-write-ioctl [third-party-advisory]

Authoritative record: CVE-2026-80115 at cve.org

Vendors: passmark software

Weaknesses: CWE-782

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-80115 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.