RCE in TP-Link Archer Be450

CVE-2026-5509

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.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.025 (83.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-5509?
CVE-2026-5509 is a high-severity vulnerability in TP-Link Archer Be450, classified under Improper Input Validation. CVSS score: 7.2/10. Published 2026-05-27.
How severe is CVE-2026-5509?
High severity. CVSS v3 base score is 7.2 out of 10.