CVE-2026-75616 Command Injection in Router Web Management Interface
An authenticated administrator can execute arbitrary system commands on the Archer C20 v6 router via the web interface, leading to full device compromise.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-75616?
CVE-2026-75616 is a high-severity command injection vulnerability in TP-Link Systems Inc. Archer C20 v6, published on 19 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
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.
Weakness: CWE-78
Which versions are affected by CVE-2026-75616?
It affects 1 product.
Products include Tp-Link Archer C20 Firmware.
How do I fix CVE-2026-75616?
No fix has been published for CVE-2026-75616 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-75616 being exploited?
There is no known exploitation of CVE-2026-75616 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in TP-Link Systems Inc. Archer C20 v6
Sources
Also known as GHSA-5w3w-j62r-pw52.