CVE-2020-21161: Cross Site Scripting (XSS) vulnerability in Ruckus Wireless ZoneDirector 9.8.3.0.

This month

MEDIUM 6.1MITIGATE

CVE-2020-21161 is a medium-severity flaw (CVSS 6.1) affecting zonedirector firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross Site Scripting (XSS) vulnerability in Ruckus Wireless ZoneDirector 9.8.3.0.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.7% (top 47%)
CISA exploited list	No
Weakness	CWE-79
Published	2022-06-27
Last modified	2026-07-09

Publisher (CNA): MITRE · Vendor: ruckuswireless

Last updated 2026-07-09 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-06-27 15:15 UTCPublished CVE record published
2026-07-09 00:16 UTCUpdated Record last modified

ruckuswireless zonedirector firmware MITIGATE

Affected: 9.8.3.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 9.8.3.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-21161?

zonedirector firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-21161 being exploited?

CVE-2020-21161 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-21161 affect?

CVE-2020-21161 affects zonedirector firmware. Severity is medium (CVSS 6.1). Cross Site Scripting (XSS) vulnerability in Ruckus Wireless ZoneDirector 9.8.3.0.

How urgent is CVE-2020-21161?

Priority 40/100. Public exploit reference

Related CVEs

CVE-2017-6224 HIGH 8.8 MITIGATE MITIGATE Ruckus Wireless Zone Director Controller firmware releases ZD9.x, ZD10.0.0.x, ZD10.0.1.x (less than 10.0.1.0.1
CVE-2017-6223 HIGH 8.8 MITIGATE Ruckus Wireless Zone Director Controller firmware releases ZD9.9.x, ZD9.10.x, ZD9.13.0.x less than 9.13.0.0.23

References

← Back to latest CVEs