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CVE-2019-19840

29
FAUCET Score

CVE-2019-19840 is a critical stack-based buffer overflow vulnerability affecting Ruckus Unleashed products through version 200.7.10.102.64, specifically within the zap_parse_args function in zap.c. This flaw allows for unauthenticated remote code execution via a crafted HTTP request, earning a CVSS score of 9.8 (Critical) due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. While the vulnerability is severe and has a high FAUCET Risk Score, there is currently no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit, Nuclei, or ExploitDB. Furthermore, there is minimal community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 200.7.10.202.94CPE matchmatch criteria
cpe:2.3:o:ruckuswireless:unleashed:*:*:*:*:*:*:*:*
< 9.10.2.0.84CPE matchmatch criteria
cpe:2.3:o:ruckuswireless:zonedirector_1200_firmware:*:*:*:*:*:*:*:*
>= 9.12.0, < 9.12.3.0.136CPE matchmatch criteria
cpe:2.3:o:ruckuswireless:zonedirector_1200_firmware:*:*:*:*:*:*:*:*
>= 9.13.0, < 10.0.1.0.90CPE matchmatch criteria
cpe:2.3:o:ruckuswireless:zonedirector_1200_firmware:*:*:*:*:*:*:*:*
>= 10.1.0, < 10.1.2.0.275CPE matchmatch criteria
cpe:2.3:o:ruckuswireless:zonedirector_1200_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.13%
Probability of exploitation in next 30 days
EPSS Percentile
89.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0413 is in the 83rd percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

alephsecurity.com / 2020/01/14/ruckus-wireless
ExploitTechnical DescriptionThird Party Advisory
fahrplan.events.ccc.de / congress/2019/Fahrplan/events/10816.html
Third Party Advisory
ruckuswireless.com / security/299/view/txt
Vendor Advisory