CVE-2019-18831
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 · uneditedBarco ClickShare Button R9861500D01 devices before 1.9.0 allow Information Exposure. The encrypted ClickShare Button firmware contains the private key of a test device-certificate.
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 confidenceThe Barco ClickShare Button R9861500D01 devices before version 1.9.0 have an information exposure vulnerability where the encrypted firmware image contains an embedded private key from a test device certificate. This exposed private key could allow an attacker to impersonate legitimate ClickShare devices or potentially conduct man-in-the-middle attacks against the ClickShare ecosystem.
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< 1.9.0< 1.9.0< 1.9.0< 1.9.0CVSS 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
- High
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/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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Identify the ClickShare device modelLog into the ClickShare admin interface or check the device label to determine if the device is a CS 100, CSE 200, CSE 200+, or CSE 800 modelAffected if Device model is one of CS 100, CSE 200, CSE 200+, or CSE 800 and firmware version is below 1.9.0
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Check the installed firmware versionAccess the ClickShare admin interface (typically via web browser at the device IP address), navigate to the System or Status section, and locate the firmware version informationAffected if Firmware version displayed is lower than 1.9.0 (for example, 1.8.x, 1.7.x, etc.)
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Verify the device is running an affected firmwareCompare the firmware version shown in the device status page against the affected range: any version before 1.9.0 (such as 1.8.0, 1.7.5, 1.6.0, etc.) indicates the device may contain the exposed test certificate private keyAffected if Firmware version is present and is less than 1.9.0, meaning the device is within the affected version range
The environment is affected if any ClickShare device (CS 100, CSE 200, CSE 200+, or CSE 800) is running firmware version 1.9.0 or older, as these versions contain an embedded private key from a test certificate in the firmware image.
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 data1.9.0
Upgrade all ClickShare Button devices to firmware version 1.9.0 or later, which should not contain the exposed test certificate private key. If exposure is suspected, consider certificate revocation and reissuance for affected deployments.
- 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-2019-18831 — 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-2019-18831 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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