CVE-2019-16672
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 · uneditedAn issue was discovered on Weidmueller IE-SW-VL05M 3.6.6 Build 16102415, IE-SW-VL08MT 3.5.2 Build 16102415, and IE-SW-PL10M 3.3.16 Build 16102416 devices. Sensitive Credentials data is transmitted in cleartext.
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 confidenceThe Weidmueller industrial ethernet switches (IE-SW-VL05M, IE-SW-VL08MT, and IE-SW-PL10M) transmit sensitive credentials such as usernames and passwords in cleartext without encryption, allowing network interceptors to capture authentication credentials in plain text.
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 data<= 3.3.4<= 3.3.4<= 3.4.4<= 3.4.4<= 3.4.4<= 3.4.4<= 3.4.4<= 3.4.4CVSS 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 Weidmueller switch modelAccess the device web interface or console and locate the model number (e.g., IE-SW-PL09M, IE-SW-PL18M) displayed in the system information or device status pageAffected if The model is one of the affected variants: IE-SW-VL05M, IE-SW-VL08MT, IE-SW-PL10M, IE-SW-PL09M, IE-SW-PL09MT, IE-SW-PL18M, IE-SW-PL18MT, or related 2gc/2sc/2st variants
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Check the installed firmware versionIn the device web interface, navigate to System > Firmware or System > Information to view the firmware version; alternatively, use the CLI command 'show version' or 'system info' via console/SSHAffected if The firmware version is 3.3.4 or lower for PL09M/PL09MT models, or 3.4.4 or lower for PL18M/PL18MT models and related variants
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Verify if HTTP (cleartext) is enabled for managementIn the web interface, go to System > Network Settings or Security > Access and check whether HTTP (port 80) is enabled for web management; also check if HTTPS (port 443) is the only allowed protocolAffected if HTTP is enabled and accessible for web-based management login, allowing credentials to be transmitted in cleartext over the network
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Capture network traffic during login to confirm cleartext transmissionUse a network packet capture tool (e.g., Wireshark) on the management network segment and observe the traffic when logging into the device web interface; look for HTTP POST or login packets containing plaintext username and password fieldsAffected if Login credentials are observable in plain text within captured network packets, indicating the vulnerability is exploitable in the current configuration
The environment is affected if a Weidmueller switch model from the affected list is running firmware at or below the specified version limits AND HTTP management access is enabled, allowing credentials to be intercepted in cleartext.
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 dataEnable encrypted communication protocols (HTTPS, SSH, VPN tunnel) for all management access to prevent credential interception; verify if firmware updates are available from Weidmueller to address this vulnerability.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2019-16672 — 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-2019-16672 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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