CVE-2026-25108Known exploitationNetwork attack vector

Authenticated OS command execution via post-login field

Published Feb 13, 2026 · Updated Feb 13, 2026

OS command injection in FileZen V4.2.1 through V4.2.8 and V5.0.0 through V5.0.10 allows remote authenticated users to run OS commands. A specific post-login field reaches an OS command without adequate neutralization, but the vendor has not disclosed the field name or code path. Exploitation requires the Antivirus Check Option and a valid FileZen user login, after which arbitrary commands run inside the appliance.

CVSS severity8.7
High
EPSS probability5.07%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in FileZen V4.2.1 through V4.2.8 and V5.0.0 through V5.0.10 allows remote authenticated users to run OS commands. A specific post-login field reaches an OS command without adequate neutralization, but the vendor has not disclosed the field name or code path. Exploitation requires the Antivirus Check Option and a valid FileZen user login, after which arbitrary commands run inside the appliance.

The record

CVE
CVE-2026-25108
Published
Feb 13, 2026
Updated
Feb 13, 2026
Vendor
Soliton Systems K.K.
Product
FileZen
Classifications
CWE-78, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=V4.2.1 to V4.2.8
  2. Affected versionversion=V5.0.0 to V5.0.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Soliton Systems K.K. · FileZenversion=V4.2.1 to V4.2.8; version=V5.0.0 to V5.0.10

Published CVSS scores

8.8JPCERT/CCCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.7JPCERT/CCCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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