# CVE-2026-25108: Soliton Systems K.K FileZen OS Command Injection

> A logged-in user can execute arbitrary OS commands if the antivirus check option is enabled in FileZen.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Yes, since 24 Feb 2026 (CISA KEV)
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 13 Feb 2026
- **Updated:** 26 Feb 2026
- **Also known as:** GHSA-qgqm-fpvv-jgfh

## What is CVE-2026-25108?

CVE-2026-25108 is a high-severity command injection vulnerability in Soliton Systems K.K. FileZen, published on 13 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

FileZen contains an OS command injection vulnerability. When FileZen Antivirus Check Option is enabled, a logged-in user may send a specially crafted HTTP request to execute an arbitrary OS command.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2026-25108?

It affects 1 product.


Products: Soliton Filezen.

## How do I fix CVE-2026-25108?

No fix has been published for CVE-2026-25108 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 17 Mar 2026.

## Is CVE-2026-25108 being exploited?

Yes. Attackers have exploited CVE-2026-25108 in the wild since at least 24 Feb 2026.

## Other vulnerabilities in Soliton Systems K.K. FileZen

- [CVE-2020-5639](https://insights.sbomify.com/CVE-2020-5639/): Path traversal in FileZen (critical 9.8)
- [CVE-2018-0694](https://insights.sbomify.com/CVE-2018-0694/): Command injection in FileZen (critical 9.8)
- [CVE-2018-0693](https://insights.sbomify.com/CVE-2018-0693/): Path traversal in FileZen (high 7.5)
- [CVE-2021-20655](https://insights.sbomify.com/CVE-2021-20655/): Command injection in FileZen (high 7.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-25108 and fix it if it is affected.

What it is: CVE-2026-25108 is a high-severity command injection vulnerability in Soliton Systems K.K. FileZen, published on 13 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: Yes. Attackers have exploited CVE-2026-25108 in the wild since at least 24 Feb 2026.

Affected product: Soliton Systems K.K. FileZen. 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-2026-25108/ (Markdown: https://insights.sbomify.com/CVE-2026-25108/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-25108
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-25108
- OSV: https://osv.dev/vulnerability/CVE-2026-25108

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-25108/
Summaries are generated and may contain mistakes; the official description above is the record.