Vision Dynamic Signage DirectorApplication · Cisco
CVE-2019-16004
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 in the REST API endpoint of Cisco Vision Dynamic Signage Director could allow an unauthenticated, remote attacker to bypass authentication on an affected device. The vulnerability is due to missing authentication on some of the API calls. An attacker could exploit this vulnerability by sending a request to one of the affected calls. A successful exploit could allow the attacker to interact with some parts of the API.
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 confidenceCisco Vision Dynamic Signage Director REST API has missing authentication checks on certain API endpoints, allowing unauthenticated remote attackers to bypass authentication and interact with some parts of the API that should require credentials.
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
Vision Dynamic Signage DirectorApplication
< 6.2.0= 6.2.0CVSS 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
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/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 installed Cisco Vision Dynamic Signage Director versionAccess the administration interface or check the system documentation for the software version information. Look for a version number displayed in the product about page, CLI show version command, or version file in the installation directory.Affected if The installed version is less than 6.2.0 or exactly equals 6.2.0
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Confirm REST API accessibilityCheck network configuration to determine if the REST API ports (typically TCP 443 for HTTPS or TCP 80 for HTTP) are open and reachable from untrusted networks. Use tools like netstat, nmap, or review firewall rules.Affected if The REST API is exposed to untrusted network segments or the internet
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Verify authentication requirement on API endpointsAttempt to access common REST API endpoints such as /api/v1/ or /vision/ without providing any authentication credentials. Use curl or a similar tool to send a request without Authorization headers or session cookies.Affected if The API responds with successful data or status 200 instead of redirecting to a login page or returning 401/403 authentication errors
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Test specific affected endpoints for authentication bypassSend unauthenticated requests to known API endpoints that should require credentials, such as those handling user data, content management, or system configuration. Compare the responses to authenticated requests.Affected if Unauthenticated requests successfully retrieve sensitive information or perform actions that should require authentication
You are affected if your installed version is less than 6.2.0 or exactly 6.2.0 AND the REST API is accessible from a network where untrusted attackers could send requests.
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 data6.2.0
Apply the Cisco patch for CVE-2019-16004 when available and restrict network access to the REST API endpoints to trusted sources.
Fix this in Vision Dynamic Signage Director
Scoped from the published advisory
- Consultation4.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,728.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-16004 — 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-2019-16004 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
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