EXECUTIVE SUMMARY:
CVE-2026-5509 with a CVSS score of 8.5 is a command injection vulnerability affecting TP‑Link Archer BE450 v1 and Archer BE7200 v1 routers running firmware versions earlier than 1.3.0 Build 20260416. The flaw arises from insufficient input sanitization in the routers’ web‑based management interface, allowing crafted strings to be passed directly to backend system commands. An attacker who obtains valid administrative credentials can log into the console, open the browser’s developer tools, and inject the malicious payload, which is processed without validation; no additional user interaction is required beyond authentication. Successful exploitation grants the attacker the ability to execute arbitrary commands with elevated privileges on the underlying operating system, enabling configuration changes, deployment of unauthorized services, or the creation of persistent back‑doors. Business‑critical consequences include loss of network confidentiality, integrity, and availability, as the compromised device can be used to alter firewall rules, enable remote access, or redirect traffic for data exfiltration. Exploitation is contingent on the presence of weak or exposed admin passwords, an unpatched firmware version, and reachable management interfaces on the target network.[/subscribe_to_unlock_form]
EXECUTIVE SUMMARY:
CVE-2026-5509 with a CVSS score of 8.5 is a command injection vulnerability affecting TP‑Link Archer BE450 v1 and Archer BE7200 v1 routers running firmware versions earlier than 1.3.0 Build 20260416. The flaw arises from insufficient input sanitization in the routers’ web‑based management interface, allowing crafted strings to be passed directly to backend system commands. An attacker who obtains valid administrative credentials can log into the console, open the browser’s developer tools, and inject the malicious payload, which is processed without validation; no additional user interaction is required beyond authentication. Successful exploitation grants the attacker the ability to execute arbitrary commands with elevated privileges on the underlying operating system, enabling configuration changes, deployment of unauthorized services, or the creation of persistent back‑doors. Business‑critical consequences include loss of network confidentiality, integrity, and availability, as the compromised device can be used to alter firewall rules, enable remote access, or redirect traffic for data exfiltration. Exploitation is contingent on the presence of weak or exposed admin passwords, an unpatched firmware version, and reachable management interfaces on the target network.[emaillocker id="1283"]
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The following reports contain further technical details:
https://cybersecuritynews.com/tp-link-router-vulnerability/