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

> Local attackers can escalate privileges or crash the system by exploiting insufficient MSR blocklist enforcement in PassMark kernel drivers.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 4 Sep 2026
- **Updated:** 1 Oct 2026
- **Also known as:** GHSA-m6jq-8p5j-c6vp

## What is CVE-2026-80115?

CVE-2026-80115 is a medium-severity vulnerability in PassMark Software BurnInTest, published on 4 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### 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 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.

Weakness: CWE-782 (Exposed IOCTL with Insufficient Access Control)

## Which versions are affected by CVE-2026-80115?


## How do I fix CVE-2026-80115?

No fix has been published for CVE-2026-80115 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-80115 being exploited?

There is no known exploitation of CVE-2026-80115 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-80115 and fix it if it is affected.

What it is: CVE-2026-80115 is a medium-severity vulnerability in PassMark Software BurnInTest, published on 4 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-80115 in the wild and no public exploit code.

Affected product: PassMark Software BurnInTest. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-80115/ (Markdown: https://insights.sbomify.com/CVE-2026-80115/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-80115
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-80115
- OSV: https://osv.dev/vulnerability/CVE-2026-80115

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-80115/
Summaries are generated and may contain mistakes; the official description above is the record.