CVE-2016-5667
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 · uneditedCrestron Electronics DM-TXRX-100-STR devices with firmware before 1.3039.00040 allow remote attackers to bypass authentication via a direct request to a page other than index.html.
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 Crestron DM-TXRX-100-STR digital media devices with firmware prior to 1.3039.00040 contain an authentication bypass vulnerability where direct HTTP requests to pages other than index.html bypass the authentication mechanism, allowing unauthenticated remote attackers to access sensitive device functions.
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= 1.2866.00026CVSS 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:3.0/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 web interface or check device labeling/marketing materials to confirm the model is Crestron DM-TXRX-100-STRAffected if The device is not a Crestron DM-TXRX-100-STR unit
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Determine the installed firmware versionLocate the firmware version information in the device web interface (typically under System, Status, or About sections) or check administrative menusAffected if The firmware version is prior to 1.3039.00040 or matches 1.2866.00026 specifically
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Verify authentication bypass conditionSend a direct HTTP request to a page other than index.html (such as /status.html or /setup.html) without providing authentication credentialsAffected if The request succeeds and returns sensitive content without requiring login, indicating the authentication bypass is present
A user is affected if they have a Crestron DM-TXRX-100-STR device running firmware versions prior to 1.3039.00040 and direct HTTP requests to non-index.html pages grant unauthenticated access.
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.
dbcve · scopedUpgrade the device firmware to version 1.3039.00040 or later, which contains the fix for the authentication bypass vulnerability.
Firmware version 1.3039.00040 or later
- 1. Identify all affected Crestron DM-TXRX-100-STR devices on the network
- 2. Check current firmware version on each device via the administrative web interface or CLI
- 3. Obtain firmware version 1.3039.00040 or later from the official Crestron Electronics support portal
- 4. Follow Crestron's standard firmware update procedure, typically via the web interface under Administration or Settings
- 5. Verify the firmware upgrade was successful by checking the new version number
- 6. Confirm the authentication bypass vulnerability is resolved by testing access to non-index.html pages without credentials
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2016-5667 — 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-2016-5667 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