HOMEVULNERABILITIESCVE-2021-20169
MEDIUM

CVE-2021-20169

CWE-319Published: December 30, 2021· Updated: Jun 17, 2026

6.8
CVSS v3.1

Official Description

Netgear RAX43 version 1.0.3.96 does not utilize secure communications to the web interface. By default, all communication to/from the device is sent via HTTP, which causes potentially sensitive information (such as usernames and passwords) to be transmitted in cleartext.

NVD Source

Technical Analysis

CVE-2021-20169 requires local access, meaning attackers must already have a foothold on the target system.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 6.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorPhysical
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

netgear2 product(s)
rax43 firmwarerax43
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://www.tenable.com/security/research/tra-2021-55
ADVISORYhttps://www.tenable.com/security/research/tra-2021-55

All References (2)

→
https://www.tenable.com/security/research/tra-2021-55Third Party Advisory
→
https://www.tenable.com/security/research/tra-2021-55Third Party Advisory

Quick Facts

CVE IDCVE-2021-20169
CVSS Score6.8 / 10
SeverityMEDIUM
WeaknessCWE-319
CISA KEVNo
Affected1 vendor(s)
PublishedDec 30, 2021

Related CVEs (CWE-319)

CVE-2025-47419
10.0
CVE-2025-4378
10.0
CVE-2023-33730
9.8
CVE-2020-9550
9.8
CVE-2020-9477
9.8
CVE-2022-46680
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-20169 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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