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Fencer Vulns
critical 9.8

CVE-2021-33216 in the critical feed json

An issue was discovered in CommScope Ruckus IoT Controller 1.7.1.0 and earlier.

published 2021-07-07 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-19928

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
13.8%
EPSS 13.8% chance of exploitation in 30 days, percentile 96%
public exploits
1
Exploit-DB

Summary

An issue was discovered in CommScope Ruckus IoT Controller 1.7.1.0 and earlier. An Undocumented Backdoor exists, allowing shell access via a developer account.

Timeline

  1. Published
  2. First public exploit (EDB-52242)

Exploit prediction

13.77% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-52242 Ruckus IoT Controller 1.7.1.0 - Undocumented Backdoor Account local, 2025-04-16

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

References

Sources

Fencer Vulns 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.