UnleashedOperating system · Ruckuswireless

CVE-2019-19836

CRITICAL · 9.8 CVSS v3.1 Published 2020-01-22
Fix available
A fix is available. Upgrade to 9.10.2.0.84 / 9.12.3.0.136 or later.
See remediation →
100/100
Remediation priority · Urgent
Public exploit Remotely reachable No privileges Zero-click

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 · unedited
AjaxRestrictedCmdStat in zap in Ruckus Wireless Unleashed through 200.7.10.102.64 allows remote code execution via a POST request that uses tools/_rcmdstat.jsp to write to a specified filename.

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
How this class of weakness works · CWE-20

The application accepts input without confirming it is well-formed or within expected bounds, so malformed data can push the program into states its author never anticipated. Attackers probe these gaps to trigger crashes, bypass logic, or feed tainted values into more dangerous operations downstream. Remediating it well means validating and normalising every input at the boundary against a strict allow-list — not merely filtering known-bad values.

General guidance for the improper input validation class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

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
UnleashedOperating system
Affected:< 200.7.10.202.94
Zonedirector 1200 FirmwareOperating system
Affected:< 9.10.2.0.84>= 9.12.0, < 9.12.3.0.136>= 9.13.0, < 10.0.1.0.90>= 10.1.0, < 10.1.2.0.275>= 10.2.0, < 10.2.1.0.147>= 10.3.0, < 10.3.1.0.21

CVSS 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

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 · scoped
Upgrade available Upgrade to 9.10.2.0.84 / 9.12.3.0.136 / 10.0.1.0.90 or later
Fixed in 9.10.2.0.849.12.3.0.13610.0.1.0.90
Recommended fix High confidence

Unleashed: 200.7.10.202.94 or later | Zonedirector 1200: 9.10.2.0.84, 9.12.3.0.136, 10.0.1.0.90, or 10.1.2.0.275 (depending on target release branch)

  1. Identify the current firmware version of the Ruckus Wireless device via the web GUI or CLI
  2. For Unleashed devices: Navigate to Administration > Firmware Upgrade and upload version 200.7.10.202.94 or later
  3. For Zonedirector 1200 devices: Determine the current version branch (9.10.x, 9.12.x, 9.13.x, 10.0.x, or 10.1.x) and upgrade to the corresponding minimum fixed version: 9.10.2.0.84, 9.12.3.0.136, 10.0.1.0.90, or 10.1.2.0.275
  4. Upload the firmware file via the web interface (Administration > Firmware Upgrade) or via TFTP/FTP for CLI-based upgrades
  5. Verify the upgrade completes successfully and the device reboots
  6. Confirm the new firmware version is running and all wireless services are operational
Caveat Review release notes for your specific version jump as firmware upgrades may reset some configurations; backup configuration before upgrading

Generated from the published advisory — verify against the referenced sources before acting.

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $2,300. Get the upgrade done

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2019-19836 — 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 sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2019-19836 in production — separate from our analysis above.

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What this is

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.

What belongs here
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  • Version or environment caveats, and links to real fixes
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