# CVE-2025-2858: Privilege escalation vulnerability in saTECH BCU

> An attacker with CLI access can use the nice command to bypass restrictions and gain superuser privileges on saTECH BCU devices.

- **Severity:** High 8.5 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:L/SI:N/SA:L`)
- **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:** 28 Mar 2025
- **Updated:** 28 Mar 2025
- **Also known as:** GHSA-74w3-v342-q9gv

## What is CVE-2025-2858?

CVE-2025-2858 is a high-severity vulnerability in Arteche saTECH BCU, published on 28 Mar 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Privilege escalation vulnerability in the saTECH BCU firmware version 2.1.3. An attacker with access to the CLI of the device could make use of the nice command to bypass all restrictions and elevate privileges as a superuser.

Weakness: CWE-269 (Improper Privilege Management)

## Which versions are affected by CVE-2025-2858?

It affects 1 product.


Products: Arteche Satech Bcu Firmware.

## How do I fix CVE-2025-2858?

No fix has been published for CVE-2025-2858 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-2858 being exploited?

There is no known exploitation of CVE-2025-2858 in the wild and no public exploit code.

## Other vulnerabilities in Arteche saTECH BCU

- [CVE-2025-2859](https://insights.sbomify.com/CVE-2025-2859/): Improper Authentication vulnerability in saTECH BCU (medium 6.9)
- [CVE-2025-2860](https://insights.sbomify.com/CVE-2025-2860/): Exposure of Sensitive Information vulnerability in saTECH BCU (medium 6.9)
- [CVE-2025-2861](https://insights.sbomify.com/CVE-2025-2861/): Cleartext Transmission of Sensitive Information vulnerability in saTECH BCU (medium 6.9)
- [CVE-2025-2862](https://insights.sbomify.com/CVE-2025-2862/): Weak Encoding for Password vulnerability in saTECH BCU (medium 6.9)
- [CVE-2025-2863](https://insights.sbomify.com/CVE-2025-2863/): Cross-site request forgery (CSRF) vulnerability in saTECH BCU (medium 5.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-2858 and fix it if it is affected.

What it is: CVE-2025-2858 is a high-severity vulnerability in Arteche saTECH BCU, published on 28 Mar 2025. 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-2025-2858 in the wild and no public exploit code.

Affected product: Arteche saTECH BCU. 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-2025-2858/ (Markdown: https://insights.sbomify.com/CVE-2025-2858/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-2858
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-2858
- OSV: https://osv.dev/vulnerability/CVE-2025-2858

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-2858/
Summaries are generated and may contain mistakes; the official description above is the record.