Is CVE-2021-33217 actively exploited?

No active exploitation of CVE-2021-33217 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-33217 be exploited remotely?

Yes. CVE-2021-33217 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-33217?

CVE-2021-33217 has a CVSS score of 8.8 (HIGH).

HOME VULNERABILITIESCVE-2021-33217

HIGH

CVE-2021-33217

CWE-787Published: July 7, 2021· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official Description

An issue was discovered in CommScope Ruckus IoT Controller 1.7.1.0 and earlier. The Web Application allows Arbitrary Read/Write actions by authenticated users. The API allows an HTTP POST of arbitrary content into any file on the filesystem as root.

NVD Source

Technical Analysis

CVE-2021-33217 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.