CVE-2020-9022: An issue was discovered on Xirrus XR520, XR620, XR2436, and XH2-120 devices
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Routine
MEDIUM 6.1MITIGATEMITIGATEMITIGATE
CVE-2020-9022 is a medium-severity flaw (CVSS 6.1) affecting xh2-120 firmware, xr2436 firmware, xr520 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
An issue was discovered on Xirrus XR520, XR620, XR2436, and XH2-120 devices. The cgi-bin/ViewPage.cgi user parameter allows XSS.
Why this priority
Public exploit reference
No fix is published yet: follow the downgrade or mitigation steps.
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
Published CVE record published
Updated Record last modified
cambiumnetworks xh2-120 firmware MITIGATE
Affected: all versions
Fixed in: no fixed release known
Safe to downgrade to: no unaffected older release
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.
cambiumnetworks xr2436 firmware MITIGATE
Affected: all versions
Fixed in: no fixed release known
Safe to downgrade to: no unaffected older release
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.
cambiumnetworks xr520 firmware MITIGATE
Affected: all versions
Fixed in: no fixed release known
Safe to downgrade to: no unaffected older release
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.
cambiumnetworks xr620 firmware MITIGATE
Affected: all versions
Fixed in: no fixed release known
Safe to downgrade to: no unaffected older release
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 sourceNVD · 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-2020-9022?
xh2-120 firmware: mitigate or apply the listed mitigation; xr2436 firmware: mitigate or apply the listed mitigation; xr520 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2020-9022 being exploited?
CVE-2020-9022 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-2020-9022 affect?
CVE-2020-9022 affects xh2-120 firmware, xr2436 firmware, xr520 firmware. Severity is medium (CVSS 6.1). An issue was discovered on Xirrus XR520, XR620, XR2436, and XH2-120 devices. The cgi-bin/ViewPage.cgi user parameter allows XSS.
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