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CVE-2021-43483

25
FAUCET Score

CVE-2021-43483 describes an access control vulnerability in CLARO KAON CG3000 1.00.67 routers, allowing unauthenticated attackers to read or modify device configurations. This high-severity flaw (CVSS 8.0) has a low attack complexity and can lead to complete compromise of confidentiality, integrity, and availability. While no public exploits, Metasploit modules, or Nuclei templates are available, and there's no evidence of active exploitation or significant community discussion, the potential impact remains critical.

Impacted Technologies

VendorProductVersion(s)CPE
1.00.67CPE matchmatch criteria
cpe:2.3:o:claro:kaon_cg3000_firmware:1.00.67:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.0HIGH

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.1
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.55%
Probability of exploitation in next 30 days
EPSS Percentile
42.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0055 is in the 37th percentile among its peer group of 554 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

alexandrevvo.medium.com / improper-access-control-no-control-at-all-in-kaon-cg3000-router-c225d2434ec1
ExploitThird Party Advisory