CVE-2025-3128
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 · uneditedA remote unauthenticated attacker who has bypassed authentication could execute arbitrary OS commands to disclose, tamper with, destroy or delete information in Mitsubishi Electric smartRTU, or cause a denial-of service condition on the product.
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 confidenceA critical command injection vulnerability in Mitsubishi Electric smartRTU allows a remote unauthenticated attacker who has bypassed authentication to execute arbitrary OS commands, potentially leading to full compromise of the device including data exfiltration, tampering, or destruction.
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 smartRTU installationAccess the device web interface or check network inventory/scan results for 'smartRTU' or Mitsubishi Electric RTU devices. Consult device documentation or login to the RTU management console to confirm the product name.Affected if The device is confirmed to be a Mitsubishi Electric smartRTU model
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Determine firmware versionLogin to the smartRTU web interface or use SNMP/management access to retrieve the firmware version. This is typically found under System Info, About, or Firmware Update sections in the device management UI.Affected if The installed firmware version is older than the patched version released by Mitsubishi Electric for this vulnerability (version comparison needed against vendor advisory)
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Verify network exposureCheck firewall rules, ACLs, or network segmentation to determine if the smartRTU management interface is accessible from untrusted networks or the internet. Use port scanning or network documentation to identify exposed management ports (HTTP/HTTPS typically).Affected if The smartRTU management interface is reachable from unauthenticated/untrusted network segments or directly from the internet
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Confirm authentication mechanism statusTest whether the device authentication can be bypassed. Attempt to access protected endpoints or APIs without valid credentials. Review authentication logs for failed or anomalous login attempts.Affected if Authentication can be bypassed or anomalous authentication behavior is observed, indicating the prerequisite for command injection may be met
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Check for indicators of compromiseReview device logs, network traffic logs, and system logs for suspicious command execution, unexpected processes, or unauthorized access attempts. Look for shell command patterns in logs or unusual outbound connections.Affected if Evidence of arbitrary command execution, suspicious processes, or unauthorized access attempts are found in logs or network traffic
A user is affected if they have a Mitsubishi Electric smartRTU with a vulnerable firmware version that is network-accessible to unauthenticated attackers and the authentication bypass condition exists or has been exploited.
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 the vendor-provided security patch or update to the smartRTU firmware immediately. If no patch is available, restrict network access to the device and implement additional monitoring/controls until a fix is released.
- Consultation4.0 h
- Implementation2.0 h
- Testing6.0 h
- Review / QA3.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-3128 — 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-2025-3128 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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