CVE-2021-36705: Prolink PRC2402M Firmware

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

In ProLink PRC2402M V1.0.18 and older, the set_TR069 function in the adm.cgi binary, accessible with a page parameter value of TR069 contains a trivial command injection where the value of the TR069_local_port parameter is passed directly to system.

Affected products

• Prolink PRC2402M Firmware: up to and including 1.0.18

Published 2021-08-06. Last modified 2026-06-17.