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No exploitation reportedFix available

CVE-2019-19840

No exploitation reported by the sources we read.

  • Published2020-01-22
  • Fixed in10.3.1.0.21 · 10.2.1.0.147 · 10.1.2.0.275 · 10.0.1.0.90 · 9.12.3.0.136 · 9.10.2.0.84
  • WeaknessCWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2020-01-2221:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2019-19840?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-19840?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Ruckuswireless zonedirector 1200 firmwareversion to verify
BranchAffectedFixed in
10.3≥ 10.3.0, < 10.3.1.0.2110.3.1.0.21
10.2≥ 10.2.0, < 10.2.1.0.14710.2.1.0.147
10.1≥ 10.1.0, < 10.1.2.0.27510.1.2.0.275
10.0≥ 9.13.0, < 10.0.1.0.9010.0.1.0.90
9.12≥ 9.12.0, < 9.12.3.0.1369.12.3.0.136
9.10< 9.10.2.0.849.10.2.0.84
Ruckuswireless unleashedversion to verify
BranchAffectedFixed in
200.7< 200.7.10.202.94200.7.10.202.94

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update Ruckuswireless zonedirector 1200 firmware to 10.3.1.0.21 · 10.2.1.0.147 · 10.1.2.0.275 · 10.0.1.0.90 · 9.12.3.0.136 · 9.10.2.0.84

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.19.8read 2026-10-23
  • NVDCVSS 2.07.5read 2026-10-23
  • NVDweakness (CWE)CWE-787read 2026-10-23
  • FIRST EPSSEPSS score4.1 %2026-11-03

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2020-01-22
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2019-19840?

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.

Is CVE-2019-19840 actively exploited?

Active exploitation of CVE-2019-19840 has not been confirmed. Its EPSS score was 4.1% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-19840?

CVE-2019-19840 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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Same product first, then the same vendor advisory and the same publication week.

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Sources for this record