# CVE-2026-59133: Microsoft High Performance Computing (HPC) Pack Elevation of Privilege Vulnerability

> An authorized attacker can elevate privileges over the network in Microsoft HPC Pack due to execution with unnecessary privileges.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Aug 2026
- **Updated:** 28 Oct 2026
- **Also known as:** GHSA-8h97-p2pm-gjpw

## What is CVE-2026-59133?

CVE-2026-59133 is a high-severity vulnerability in Microsoft HPC Pack 2019, published on 11 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Execution with unnecessary privileges in Microsoft High Performance Computing (HPC) Pack allows an authorized attacker to elevate privileges over a network.

Weakness: CWE-250 (Execution with Unnecessary Privileges)

## Which versions are affected by CVE-2026-59133?

It affects 1 product.


Products: Microsoft Windows App.

## How do I fix CVE-2026-59133?

No fix has been published for CVE-2026-59133 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-59133 being exploited?

There is no known exploitation of CVE-2026-59133 in the wild and no public exploit code.

## Other vulnerabilities in Microsoft HPC Pack 2019

- [CVE-2026-59124](https://insights.sbomify.com/CVE-2026-59124/): Microsoft High Performance Computing (HPC) Pack Remote Code Execution Vulnerability (critical 9.8)
- [CVE-2020-0919](https://insights.sbomify.com/CVE-2020-0919/): Privilege escalation in Microsoft Remote Desktop for Mac (high 7.8)
- [CVE-2026-69550](https://insights.sbomify.com/CVE-2026-69550/): Windows App for Mac Information Disclosure Vulnerability (medium 6.5)
- [CVE-2026-23656](https://insights.sbomify.com/CVE-2026-23656/): Windows App Installer Spoofing Vulnerability (medium 5.9)
- [CVE-2026-21517](https://insights.sbomify.com/CVE-2026-21517/): Windows App for Mac Installer Elevation of Privilege Vulnerability (medium 4.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-59133 and fix it if it is affected.

What it is: CVE-2026-59133 is a high-severity vulnerability in Microsoft HPC Pack 2019, published on 11 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-59133 in the wild and no public exploit code.

Affected product: Microsoft HPC Pack 2019. 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-2026-59133/ (Markdown: https://insights.sbomify.com/CVE-2026-59133/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-59133
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-59133
- OSV: https://osv.dev/vulnerability/CVE-2026-59133

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-59133/
Summaries are generated and may contain mistakes; the official description above is the record.