Security readout for executives and security teams
Plain-English summary
FileZen has a high-severity command injection flaw. If the Antivirus Check Option is enabled, a logged-in user could send a crafted web request that makes the server run operating system commands. This can lead to full compromise of confidentiality, integrity, and availability on the affected FileZen system.
Executive priority
Treat as high priority for any affected FileZen deployment, especially externally reachable systems. The issue can allow a valid user to execute server commands, which may result in data theft, service disruption, or broader compromise. Start with inventory, access restriction, and vendor advisory review.
Technical view
CVE-2026-25108 is CWE-78 OS command injection in Soliton Systems FileZen V5.0.0–V5.0.10 and V4.2.1–V4.2.8. The CVSS 3.0 score is 8.8, with network access, low complexity, low privileges, no user interaction, and high CIA impact. The vulnerable condition is tied to the FileZen Antivirus Check Option being enabled.
Likely exposure
Exposure is limited to affected FileZen versions where an attacker can authenticate and reach the FileZen HTTP interface. Risk increases where regular users have accounts, remote access is allowed, or the appliance is internet-facing. Systems outside the listed version ranges are not confirmed affected by the provided sources.
Exploitation context
The provided sources do not state active exploitation. The CISA KEV reference in the bundle indicates kev:false, so do not treat this as known exploited based on current evidence. Exploitation requires a logged-in user and a specially crafted HTTP request; no further offensive detail is provided here.
Researcher notes
Official data identifies command injection under an authenticated, network-reachable condition. Public bundle confirms affected FileZen V5.0.0–V5.0.10 and V4.2.1–V4.2.8, CVSS 8.8, and Antivirus Check Option relevance. The bundle does not provide proof-of-concept status, exploit telemetry, or specific patch version details.
Mitigation direction
- Identify FileZen instances and their exact versions.
- Prioritize V5.0.0–V5.0.10 and V4.2.1–V4.2.8.
- Review Soliton’s advisory for official fixes or configuration guidance.
- Apply vendor-recommended updates or mitigations when confirmed.
- Restrict FileZen HTTP access to trusted networks and users.
- Review whether Antivirus Check Option is enabled and needed.
Validation and detection
- Confirm installed FileZen version against affected ranges.
- Check whether Antivirus Check Option is enabled.
- Verify only authorized users can reach the FileZen web interface.
- Review authentication and web logs for unusual activity.
- Confirm vendor-recommended remediation has been applied.
- Recheck CISA KEV for status changes.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-25108 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.8 (3.0)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
8.8HighVector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.soliton.co.jp/support/2026/006657.htmlCVE reference
- https://jvn.jp/en/jp/JVN84622767/CVE reference
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-25108CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.