# CVE-2025-59887: Code injection in Eaton UPS Companion Software

> An attacker with access to the software package can execute arbitrary code due to improper authentication of library files in the Eaton UPS Companion installer.

- **Severity:** High 8.6 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 26 Dec 2025
- **Updated:** 26 Dec 2025
- **Also known as:** GHSA-ccr5-cv34-54fp

## What is CVE-2025-59887?

CVE-2025-59887 is a high-severity code injection vulnerability in Eaton UPS Companion Software, published on 26 Dec 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

Improper authentication of library files in the Eaton UPS Companion software installer could lead to arbitrary code execution of an attacker with the access to the software package.  This security issue has been fixed in the latest version of EUC which is available on the Eaton download center.

Weakness: CWE-427 (Uncontrolled Search Path Element)

## Which versions are affected by CVE-2025-59887?

It affects 1 product.


Products: Eaton Ups Companion.

## How do I fix CVE-2025-59887?

No fix has been published for CVE-2025-59887 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-59887 being exploited?

There is no known exploitation of CVE-2025-59887 in the wild and no public exploit code.

## Other vulnerabilities in Eaton UPS Companion Software

- [CVE-2020-6650](https://insights.sbomify.com/CVE-2020-6650/): Arbitrary code execution through “Update Manager” Class (high 8.3)
- [CVE-2025-67450](https://insights.sbomify.com/CVE-2025-67450/): Other in UPS Companion software (high 7.8)
- [CVE-2025-59888](https://insights.sbomify.com/CVE-2025-59888/): Path traversal in UPS Companion software (medium 6.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-59887 and fix it if it is affected.

What it is: CVE-2025-59887 is a high-severity code injection vulnerability in Eaton UPS Companion Software, published on 26 Dec 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2025-59887 in the wild and no public exploit code.

Affected product: Eaton UPS Companion Software. 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-2025-59887/ (Markdown: https://insights.sbomify.com/CVE-2025-59887/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-59887
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-59887
- OSV: https://osv.dev/vulnerability/CVE-2025-59887

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-59887/
Summaries are generated and may contain mistakes; the official description above is the record.