CVE-2025-20055
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedOS command injection vulnerability exists in network storage servers STEALTHONE D220/D340 provided by Y'S corporation. An attacker who can access the affected product may execute an arbitrary OS command.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceOS command injection vulnerability in Y'S corporation STEALTHONE D220/D340 network storage servers allows authenticated or network-adjacent attackers to execute arbitrary OS commands on the underlying system through unsanitized input fields in the web management interface or API. This critical flaw enables complete system compromise including data exfiltration, malware deployment, or lateral movement.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify the device modelAccess the device's web management interface or check physical labels. Look for STEALTHONE D220 or D340 markings. The web interface often displays device information on the login page or in a 'System Information' or 'Device Status' section.Affected if The device is a STEALTHONE D220 or D340 network storage server.
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Determine firmware versionIn the web management interface, navigate to System Settings, Maintenance, or About page. Look for a firmware version field. Record the exact version number displayed.Affected if The installed firmware version has not been patched and falls within the unpatched version range for this device.
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Verify web management interface exposureCheck if the web management interface (HTTP/HTTPS on ports 80, 443, or custom management ports) is accessible from untrusted networks. Use a browser or curl command from an external network to test connectivity to the management URL.Affected if The web management interface is exposed to the internet or untrusted networks without VPN or firewall restrictions.
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Review access logs for suspicious commandsIf available, examine the device's logs, access logs, or audit logs for entries containing unusual or malformed input patterns that may indicate command injection attempts. Look for unexpected characters like semicolons, pipes, backticks, or $( ) in parameter fields.Affected if Logs show evidence of command injection attempts or unexpected system command executions.
A user is affected if they own a STEALTHONE D220 or D340 device with an unpatched firmware version and have their web management interface accessible, making it vulnerable to authenticated or network-adjacent command injection attacks.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataApply vendor firmware patches when released; immediately restrict network access to management interfaces via firewall rules or VPN; disable remote management if not required; monitor for indicators of compromise.
- Consultation8.0 h
- Implementation16.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $10,240.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-20055 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-20055 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data