CVE-2026-75616

HIGH CVSS 4.0: 8.5 EPSS 3.12%
Updated Sep 09, 2026
TP-Link
Parameter Value
CVSS 8.5 (HIGH)
Affected Versions before 0.9.1
Fixed In 0.9.1
Type CWE-78 (OS Command Injection)
Vendor TP-Link
Public PoC No

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.

Attack Parameters

Attack Vector
Adjacent
Requires local network access
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
High
Admin privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v4.0

Weakness Type (CWE)

Vulnerable Products 2

Configuration From (including) Up to (excluding)
Tp-Link Archer_C20_Firmware
cpe:2.3:o:tp-link:archer_c20_firmware:*:*:*:*:*:*:*:*
0.9.1
Tp-Link Archer_C20
cpe:2.3:h:tp-link:archer_c20:6.0:*:*:*:*:*:*:*