What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2026-02-24
• EPSS: 5.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-02-13 · updated 2026-06-17
• Weakness: CWE-78

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.

Affected products

• Soliton Systems K.K. FileZen: from 4.2.1 before 5.0.11 — fixed in 5.0.11

How to fix

Upgrade to a fixed version: Soliton Systems K.K. FileZen 5.0.11. Check the vendor advisory for mitigations.

References

• https://jvn.jp/en/jp/JVN84622767/
• https://www.soliton.co.jp/support/2026/006657.html
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-25108

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