Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Tp-Link | Archer Be450 Firmware | < 1.3.0 |
| Tp-Link | Archer Be450 | 1.0 |
| Tp-Link | Archer Be7200 Firmware | < 1.3.0 |
| Tp-Link | Archer Be7200 | 1.0 |
Related Weaknesses (CWE)
References
- https://jvn.jp/en/vu/JVNVU95687008/
- https://www.tp-link.com/en/support/download/archer-be450/#FirmwareProduct
- https://www.tp-link.com/jp/support/download/archer-be450/#FirmwareProduct
- https://www.tp-link.com/jp/support/download/archer-be7200/#FirmwareProduct
- https://www.tp-link.com/us/support/faq/5102/Vendor Advisory
FAQ
What is CVE-2026-5509?
CVE-2026-5509 is a vulnerability with a CVSS score of 7.2 (HIGH). 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 interfa...
How severe is CVE-2026-5509?
CVE-2026-5509 has been rated HIGH with a CVSS base score of 7.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-5509?
Check the references section above for vendor advisories and patch information. Affected products include: Tp-Link Archer Be450 Firmware, Tp-Link Archer Be450, Tp-Link Archer Be7200 Firmware, Tp-Link Archer Be7200.