CVE-2026-5509 Arbitrary Command Injection via Browser Developer Console in TP-Link Archer BE450 and BE7200
Authenticated administrators can execute arbitrary system commands on TP-Link Archer routers 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-2026-5509?
CVE-2026-5509 is a high-severity command injection vulnerability in TP-Link Systems Inc. Archer BE450 v1, published on 27 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An authenticated command injection vulnerability exists in the Archer BE450 v1 and BE7200 v1 router that allows an administrator to execute arbitrary system commands through the web management interface. After successfully authenticating to the admin interface, an attacker can leverage the browser’s developer console by supplying a crafted input that is passed to backend system commands without adequate sanitization.
Successful exploitation enables execution of arbitrary commands with elevated privileges on the device, which may allow the attacker to start unauthorized services, modify system configuration, or otherwise fully compromise the router’s operating environment.
Which versions are affected by CVE-2026-5509?
It affects 2 products.
Products include Tp-Link Archer Be450 Firmware, Tp-Link Archer Be7200 Firmware.
How do I fix CVE-2026-5509?
No fix has been published for CVE-2026-5509 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-2026-5509 being exploited?
There is no known exploitation of CVE-2026-5509 in the wild and no public exploit code.
Sources
Also known as GHSA-5qh8-v6gw-rfcc.