CVE-2021-37378: Cross Site Scripting (XSS) vulnerability in Teradek Cube and Cube Pro firmware version 7.3.x and earlier allow

Q: How do I fix CVE-2021-37378?

cube firmware: upgrade to newer than 7.3.19; cube pro firmware: upgrade to newer than 7.3.16. Exact commands for each OS are on this page.

Q: Is CVE-2021-37378 being exploited?

CVE-2021-37378 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-37378 affect?

CVE-2021-37378 affects cube firmware, cube pro firmware. Severity is medium (CVSS 5.4). Cross Site Scripting (XSS) vulnerability in Teradek Cube and Cube Pro firmware version 7.3.x and earlier allows remote attackers to run arbitrary code via the Friendly Name field in System Information Settings. NOTE: Vedor states the produc

Q: How urgent is CVE-2021-37378?

Priority 36/100. Public exploit reference

Routine

MEDIUM 5.4UPGRADEUPGRADE

CVE-2021-37378 is a medium-severity flaw (CVSS 5.4) affecting cube firmware, cube pro 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 Teradek Cube and Cube Pro firmware version 7.3.x and earlier allows remote attackers to run arbitrary code via the Friendly Name field in System Information Settings. NOTE: Vedor states the product has reached End of Life and will not be receiving any firmware updates to address this issue.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.6% (top 52%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-02-03
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: teradke

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-02-03 18:15 UTCPublished CVE record published
2026-06-17 04:00 UTCUpdated Record last modified

teradke cube firmware UPGRADE

Affected: >= 7.3.0 and <= 7.3.19

Fixed in: newer than 7.3.19

Safe to downgrade to: a release before 7.3.0

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.

teradke cube pro firmware UPGRADE

Affected: >= 7.3.0 and <= 7.3.16

Fixed in: newer than 7.3.16

Safe to downgrade to: a release before 7.3.0

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-2021-37378?

cube firmware: upgrade to newer than 7.3.19; cube pro firmware: upgrade to newer than 7.3.16. Exact commands for each OS are on this page.

Is CVE-2021-37378 being exploited?

CVE-2021-37378 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-2021-37378 affect?

CVE-2021-37378 affects cube firmware, cube pro firmware. Severity is medium (CVSS 5.4). Cross Site Scripting (XSS) vulnerability in Teradek Cube and Cube Pro firmware version 7.3.x and earlier allows remote attackers to run arbitrary code via the Friendly Name field in System Information Settings. NOTE: Vedor states the produc

How urgent is CVE-2021-37378?

Priority 36/100. Public exploit reference

Related CVEs

CVE-2018-25156 MEDIUM 4.3 MITIGATE Teradek Cube 7.3.6 contains a cross-site request forgery vulnerability that allows attackers to change adminis

References

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