CVE-2019-18321
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 vulnerability has been identified in SPPA-T3000 MS3000 Migration Server (All versions). An attacker with network access to the MS3000 Server could be able to read and write arbitrary files on the local file system by sending specifically crafted packets to port 5010/tcp. This vulnerability is independent from CVE-2019-18322. Please note that an attacker needs to have network access to the MS3000 in order to exploit this vulnerability. At the time of advisory publication no public exploitation of this security vulnerability was known.
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 · high confidenceArbitrary file read/write vulnerability in SPPA-T3000 MS3000 Migration Server allowing an attacker with network access to port 5010/tcp to read and write arbitrary files on the local filesystem via specifically crafted packets. This is a critical severity ICS vulnerability with network-exploitable file system access.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE dataall versionsCVSS 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
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
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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Verify MS3000 Migration Server presenceInspect running processes or installed services for 'MS3000 Migration Server' or 'Sppa T3000' components. Check Windows Services or Unix service listings for Siemens process names related to migration server.Affected if The MS3000 Migration Server component is installed or running on the system
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Confirm port 5010 is listeningRun 'netstat -an | grep 5010' or 'ss -tlnp | grep 5010' to check if port 5010/tcp is in LISTEN state on the local host.Affected if Port 5010/tcp is bound and listening, indicating the vulnerable service is active
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Assess network exposure of port 5010Review firewall rules (Windows Firewall, iptables, or network perimeter firewalls) to determine if port 5010 is accessible from untrusted network segments. Use 'netsh advfirewall firewall show rule name=all' or inspect network zone configurations.Affected if Port 5010/tcp is permitted through any firewall boundary allowing access from networks outside the trusted management zone
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Identify the product versionCheck the installed version of Siemens SPPA-T3000 MS3000 Migration Server via program files directory, registry keys, or the application's about/version information if accessible.Affected if Any version of SPPA-T3000 MS3000 Migration Server is installed, as all versions are affected according to the advisory
The environment is affected if the MS3000 Migration Server is installed with port 5010/tcp accessible from the network, since all versions contain this arbitrary file read/write vulnerability.
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 dataRestrict network access to port 5010/tcp via firewall rules and network segmentation; isolate MS3000 Migration Server from untrusted networks. Apply vendor security patches when available. Monitor for anomalous traffic on port 5010/tcp.
- Consultation8.0 h
- Implementation16.0 h
- Testing12.0 h
- Review / QA8.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-18321 — 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-2019-18321 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
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