Vulnerability · Published Aug 19, 2026 · Assigned by TPLink
CVE-2026-75616Command Injection in Router Web Management Interface
High 8.5
In plain English
A high-severity OS command injection in Archer C20 v6 from TP-Link Systems Inc.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.8% (higher than 87% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| TP-Link Systems Inc. | Archer C20 v6 | 0 – before EU_0.9.1 Build 2608110 – before US_0.9.1 Build 2608120 – before RU_0.9.1 Build 260812 |
Weakness: CWE-78 · Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N