Tp-Link: >> Archer C20 Firmware >> 6.6_230412 Security Vulnerabilities
The response coming from TP-Link Archer MR200 v5.2, C20 v6, TL-WR850N v3, and TL-WR845N v4 for any request is getting executed by the JavaScript function like eval directly without any check. Attackers can exploit this vulnerability via a Man-in-the-Middle (MitM) attack to execute JavaScript code on the router's admin web portal without the user's permission or knowledge.
CVSS Score
5.6
EPSS Score
0.001
Published
2026-02-05
A vulnerability in the TP-Link Archer c20 router with firmware version V6.6_230412 and earlier permits unauthorized individuals to bypass the authentication of some interfaces under the /cgi directory. When adding Referer: http://tplinkwifi.net to the the request, it will be recognized as passing the authentication. NOTE: this is disputed by the Supplier because the response to the API call is only "non-sensitive UI initialization variables."
CVSS Score
9.8
EPSS Score
0.488
Published
2025-02-18
Improper authentication vulnerability in Archer C20 firmware versions prior to 'Archer C20(JP)_V1_230616' allows a network-adjacent unauthenticated attacker to execute an arbitrary OS command via a crafted request to bypass authentication.
CVSS Score
8.8
EPSS Score
0.0
Published
2023-09-06