What’s Vulnerable › Vulnerabilities

CVE-2019-19840

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-01-22 · updated 2026-06-17
• Weakness: CWE-787

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.

Affected products

• Ruckuswireless Unleashed: before 200.7.10.202.94 — fixed in 200.7.10.202.94
• Ruckuswireless Zonedirector 1200 Firmware: before 9.10.2.0.84; from 9.12.0 before 9.12.3.0.136; from 9.13.0 before 10.0.1.0.90; from 10.1.0 before 10.1.2.0.275; from 10.2.0 before 10.2.1.0.147; from 10.3.0 before 10.3.1.0.21 — fixed in 10.0.1.0.90, 10.1.2.0.275, 10.2.1.0.147, 10.3.1.0.21, 9.10.2.0.84, 9.12.3.0.136

How to fix

Upgrade to a fixed version: Ruckuswireless Unleashed 200.7.10.202.94; Ruckuswireless Zonedirector 1200 Firmware 10.0.1.0.90, 10.1.2.0.275, 10.2.1.0.147, 10.3.1.0.21. Check the vendor advisory for mitigations.

References

• https://alephsecurity.com/2020/01/14/ruckus-wireless
• https://fahrplan.events.ccc.de/congress/2019/Fahrplan/events/10816.html
• https://www.ruckuswireless.com/security/299/view/txt
• https://alephsecurity.com/2020/01/14/ruckus-wireless
• https://fahrplan.events.ccc.de/congress/2019/Fahrplan/events/10816.html
• https://www.ruckuswireless.com/security/299/view/txt

Get alerted when CVE-2019-19840 or the next vulnerability affects your stack