CVE-2021-44626: TP-Link Tl-WR886N Firmware

Critical severity, CVSS 9.8. EPSS: 2.6% chance of exploitation in the next 30 days.

A Buffer Overflow vulnerability exists in TP-LINK WR-886N 20190826 2.3.8 in the /cloud_config/router_post/get_reg_verify_code feature, which allows malicious users to execute arbitrary code on the system via a crafted post request.

Affected products

• TP-Link Tl-WR886N Firmware: version 20190826_2.3.8 only

Published 2022-03-10. Last modified 2026-06-17.