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CVE-2019-19840· NVD / CVE Program· CNA mitre

A stack-based buffer overflow in zap_parse_args in zap.c in zap in Ruckus Unleashed through 200.7.10.102.64 allows remote code execution via

Noroxi assessment

Priority: Plan (action score 40/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 4.1% (FIRST EPSS); higher than 90.7% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to the record, no fixed version is available yet.

Add it to your regular patch cycle. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A stack-based buffer overflow in zap_parse_args in zap.c in zap in Ruckus Unleashed through 200.7.10.102.64 allows remote code execution via an unauthenticated HTTP request.

CriticalCVSS 9.8 · v3.1—No exploit No fix recorded
Published
Jan 22, 2020
Updated
Jun 16, 2026
EPSS
4.1% · 90th percentile

Report tools

JSON

Action score

40

Plan

Add it to your regular patch cycle.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 4.1%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2019-19840

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
ruckuswirelessunleashed
ruckuswirelessc110
ruckuswirelesse510
ruckuswirelessh320
ruckuswirelessh510
ruckuswirelessm510
ruckuswirelessr310
ruckuswirelessr320
ruckuswirelessr510
ruckuswirelessr610
ruckuswirelessr710
ruckuswirelessr720

and 5 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • ruckuswireless unleashedbefore 200.7.10.202.94
  • ruckuswireless zonedirector 1200 firmwarebefore 9.10.2.0.84
  • ruckuswireless zonedirector 1200 firmware9.12.0 and later · before 9.12.3.0.136
  • ruckuswireless zonedirector 1200 firmware9.13.0 and later · before 10.0.1.0.90
  • ruckuswireless zonedirector 1200 firmware10.1.0 and later · before 10.1.2.0.275
  • ruckuswireless zonedirector 1200 firmware10.2.0 and later · before 10.2.1.0.147
  • ruckuswireless zonedirector 1200 firmware10.3.0 and later · before 10.3.1.0.21

Same product

ruckuswireless: all records

Other highest-scoring records for the same primary product.

  • CVE-2019-19838emfd in Ruckus Wireless Unleashed through 200.7.10.102.64 allows remote attackers to execute OS commands via a POST request with the attribu
    46Plan
  • CVE-2019-19839emfd in Ruckus Wireless Unleashed through 200.7.10.102.64 allows remote attackers to execute OS commands via a POST request with the attribu
    40Plan
  • CVE-2019-19842emfd in Ruckus Wireless Unleashed through 200.7.10.102.64 allows remote attackers to execute OS commands via a POST request with the attribu
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2019-19836Jan 22, 2020 · AjaxRestrictedCmdStat in zap in Ruckus Wireless Unleashed through 200.7.10.102.64 allows remote code execution via a POST request that uses
    40Plan
  • ← EarlierCVE-2019-19843Jan 22, 2020 · Incorrect access control in the web interface in Ruckus Wireless Unleashed through 200.7.10.102.64 allows remote credential fetch via an una
    40Plan
  • Later →CVE-2019-19841Jan 22, 2020 · emfd in Ruckus Wireless Unleashed through 200.7.10.102.64 allows remote attackers to execute OS commands via a POST request with the attribu
    40Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-787 · Out-of-bounds Write

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Show all references (1 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records