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Fencer Intel
critical 9.8

CVE-2019-19840 json

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 vi…

published 6y ago modified 4mo ago also EUVD-2019-9437

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.1%
EPSS 4.1% chance of exploitation in 30 days, percentile 90%
public exploits
0
none known

Summary

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.

Patch / fix

  • ruckuswireless unleashed 200.7.10.202.94
  • ruckuswireless zonedirector_1200_firmware 9.10.2.0.84, 9.12.3.0.136, 10.0.1.0.90, 10.1.2.0.275, 10.2.1.0.147, 10.3.1.0.21

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Exploit prediction

4.13% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • alephsecurity.com https://alephsecurity.com/2020/01/14/ruckus-wireless referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.