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CVE-2021-43483: An Access Control vulnerability exists in CLARO KAON CG3000 1.00.67 in the router configuration, which could a

45
This month
HIGH 8.0MITIGATE

CVE-2021-43483 is a high-severity flaw (CVSS 8.0) affecting kaon cg3000 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An Access Control vulnerability exists in CLARO KAON CG3000 1.00.67 in the router configuration, which could allow a malicious user to read or update the configuraiton without authentication.

Why this priority

  • High severity
  • Public exploit reference

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

Risk facts

CVSS score8.0 (High)
Attack vectorAdjacent network
Attack complexityLow
Privileges neededLow
User interactionNone
EPSS exploit chance0.6% (top 54%)
CISA exploited listNo
WeaknessCWE-306
Published2022-04-08
Last modified2026-06-17
Publisher (CNA): MITRE · Vendor: claro

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

Am I affected?

Timeline

claro kaon cg3000 firmware MITIGATE
Affected: 1.00.67
Fixed in: no fixed release known
Safe to downgrade to: a release before 1.00.67
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-2021-43483?

kaon cg3000 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-43483 being exploited?

CVE-2021-43483 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-2021-43483 affect?

CVE-2021-43483 affects kaon cg3000 firmware. Severity is high (CVSS 8.0). An Access Control vulnerability exists in CLARO KAON CG3000 1.00.67 in the router configuration, which could allow a malicious user to read or update the configuraiton without authentication.

How urgent is CVE-2021-43483?

Priority 45/100. High severity; Public exploit reference

References

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