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CVE-2026-80115— PassMark PerformanceTest, BurnInTest, and OSForensics Kernel Crash via DirectIo64.sys MSR Write IOCTL

Quick assessment

Affected
PassMark Software PerformanceTest
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

PassMark PerformanceTest 11.1 build 1012 之前的版本、BurnInTest 11.1 build 1000 之前的版本，以及 OSForensics 11.1 build 1016 之前的版本中，DirectIo64.sys 存在一个权限提升和拒绝服务（DoS）漏洞。该漏洞由暴露的 IOCTL 以及不充分的黑名单（blocklist）执行机制引起，使得本地攻击者能够读取任意的模型特定寄存器（MSR），或通过未受限制的写 IOCTL 向任意 MSR 写入零值。 攻击者可以利用该

CVSS 6.1 · Medium

Affected Version Matrix 3

VendorProduct Version RangeStatus
PassMark Software BurnInTest < 11.1 build 1000 affected
PassMark Software OSForensics < 11.1 build 1016 affected
PassMark Software PerformanceTest < 11.1 build 1012 affected
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I. Basic Information for CVE-2026-80115

Vulnerability Information
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Vulnerability Title
PassMark PerformanceTest, BurnInTest, and OSForensics Kernel Crash via DirectIo64.sys MSR Write IOCTL
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
无充分访问控制条件下暴露IOCTL
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
PassMark Software PerformanceTest 0 ~ 11.1 build 1012 -
PassMark Software BurnInTest 0 ~ 11.1 build 1000 -
PassMark Software OSForensics 0 ~ 11.1 build 1016 -

II. Public POCs for CVE-2026-80115

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-80115

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Vendor Advisories for CVE-2026-80115 (1)

Proof of Concept for CVE-2026-80115 (1)

Security Blog Posts for CVE-2026-80115 (1)

Vendor Pages for CVE-2026-80115 (2)

Same Patch Batch · PassMark Software · 2026-09-04 · 8 CVEs total

CVE-2026-80116 7.8 HIGH PassMark PerformanceTest, BurnInTest, and OSForensics Privilege Escalation via DirectIo64.
CVE-2026-80114 7.8 HIGH PassMark PerformanceTest, BurnInTest, and OSForensics Hard-coded Credentials Authenticatio
CVE-2026-80119 7.8 HIGH PassMark PerformanceTest, BurnInTest, and OSForensics Physical Memory Disclosure via Direc
CVE-2026-80112 7.8 HIGH PassMark PerformanceTest, BurnInTest, and OSForensics Improper Access Control via DirectIo
CVE-2026-80113 7.1 HIGH PassMark PerformanceTest, BurnInTest, and OSForensics Arbitrary Bit Clear via DirectIo64.s
CVE-2026-80117 7.1 HIGH PassMark PerformanceTest, BurnInTest, and OSForensics Arbitrary I/O Port Access via Direct
CVE-2026-80118 7.1 HIGH PassMark PerformanceTest, BurnInTest, and OSForensics Kernel Null Pointer Dereference via

IV. Related Vulnerabilities

Same product: PerformanceTest
Same vendor: PassMark Software
Same weakness: CWE-782

V. Comments for CVE-2026-80115

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