CVE-2021-20166 (GCVE-0-2021-20166)

Vulnerability from cvelistv5 – Published: 2021-12-30 21:31 – Updated: 2024-08-03 17:30
VLAI Previdian
Summary
Netgear RAX43 version 1.0.3.96 contains a buffer overrun vulnerability. The URL parsing functionality in the cgi-bin endpoint of the router containers a buffer overrun issue that can redirection control flow of the applicaiton.
Severity
8.8 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • Buffer Overrun
Assigner
References
Impacted products
Vendor Product Version
n/a Netgear RAX43 Affected: 1.0.3.96
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 921636b3-1528-42af-98c2-09b026a2c35f

Vulnerability ID: CVE-2021-20166

Status: Confirmed

Status Updated: 2026-06-07 02:00 CEST

Exploited: Yes

Timestamps
First Seen: 2026-06-07
Asserted: 2026-06-07
Scope
Notes: Netgear RAX43 version 1.0.3.96 contains a buffer overrun vulnerability. The URL parsing functionality in the cgi-bin endpoint of the router... | Affected: Netgear / RAX43 | CVSS: 8.8 (HIGH) | EPSS: 0.02195 | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: previdian

Details
Feed Previdian (previdian.com)
Title Netgear RAX43 version 1.0.3.96 contains a buffer overrun vulnerability. The URL parsing functionality in the cgi-bin endpoint of the router...
Cve Id CVE-2021-20166
Vendor Netgear
Ghsa Id None
Product RAX43
Added Date 2026-06-07T00:00:00.000Z
Cvss Score 8.8
Epss Score 0.02195
Previous Ids
Cvss Severity HIGH
Virtual Patch False
Cvss Estimated False
Epss Percentile 0.81833
Used In Malware unknown
Vulnerability Id CVE-2021-20166
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-10-02 09:09 CEST | Updated: 2026-10-02 09:09 CEST
Show details on NVD website
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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