Tp-Link: >> Archer C20 Firmware Security Vulnerabilities
An OS command injection vulnerability exists in the web management interface of Archer C20 v6 firmware when processing certain WAN-related configuration operations. An authenticated administrator may exploit insufficient input validation to execute arbitrary system commands, potentially resulting in full device compromise.
Successful exploitation may allow arbitrary command execution with elevated privileges, compromising the confidentiality, integrity, and availability of the affected device and network traffic passing through it.
CVSS Score
8.5
EPSS Score
0.031
Published
2026-08-19
The response coming from TP-Link Archer MR200 v5.2, C20 v5 and 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
5.9
EPSS Score
0.004
Published
2026-02-05
Logic vulnerability in TP-Link Archer C20 v5, 6.0, Archer AX53 v1.0 and TL-WR841N v13 (TDDP module) allows unauthenticated adjacent attackers to execute administrative commands including factory reset and device reboot without credentials. Attackers on the adjacent network can remotely trigger factory resets and reboots without credentials, causing configuration loss and interruption of device availability.
This issue affects Archer C20 v6.0 < V6_251031, Archer C20 v5 <EU_V5_260317 or < US_V5_260419
Archer AX53 v1.0 <
V1_251215
TL-WR841N v13 < 0.9.1 Build 20231120 Rel.62366
CVSS Score
7.2
EPSS Score
0.004
Published
2026-01-21
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
0.004
Published
2023-09-06
TP-LINK Archer C50v2 Archer C50(US)_V2_160801, TP-LINK Archer C20v1 Archer_C20_V1_150707, and TP-LINK Archer C2v1 Archer_C2_US__V1_170228 were discovered to contain a buffer overflow which may lead to a Denial of Service (DoS) when parsing crafted data.
CVSS Score
7.5
EPSS Score
0.013
Published
2023-07-18