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CVE-2021-33216

46
FAUCET Score

CVE-2021-33216 is a critical vulnerability affecting CommScope Ruckus IoT Controller versions 1.7.1.0 and earlier, stemming from an undocumented backdoor account that grants shell access. With a CVSS score of 9.8, this vulnerability allows unauthenticated attackers to achieve full compromise (confidentiality, integrity, availability) over a network with low attack complexity. While not listed in CISA's KEV catalog, public exploit code is available on ExploitDB, though there is minimal community discussion or media coverage surrounding this flaw.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.7.1.0CPE matchmatch criteria
cpe:2.3:a:commscope:ruckus_iot_controller:*:*:*:*:*:*:*:*

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
13.77%
Probability of exploitation in next 30 days
EPSS Percentile
96.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-52242 · Apr 16, 2025
This CVE's current EPSS score of 0.1377 is in the 92nd percentile among its peer group of 36,862 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

Patch Available

Vendor Patches (2)

nessuspatch availablevia llm_extracted
Fixed in: 1.0
View patch
debianvendor investigatingvia llm_extracted
View patch

Vendor Advisories (2)

debianllm-debian-782452a350927509

Multiple Vulnerabilities in RUCKUS IoT Controller (CVE-2021-33221, CVE- 2021-33220, CVE-2021-33219, CVE-2021-33218, CVE-2021-33217, CVE-2021- 33216, and CVE-2021-33215)

May 25, 2021
nessusllm-nessus-c9eaaa0dc1cac254

Multiple Vulnerabilities in RUCKUS IoT Controller (CVE-2021-33221, CVE- 2021-33220, CVE-2021-33219, CVE-2021-33218, CVE-2021-33217, CVE-2021- 33216, and CVE-2021-33215)

May 25, 2021

References

seclists.org / fulldisclosure/2021/May/78
Mailing ListThird Party Advisory
korelogic.com / advisories.html
Third Party Advisory