Exploitable backdoors that can provide full control over devices have been discovered in routers sold on the Chinese market, the Beijing Times reported on Monday.

The backdoors, which put networks and user data at risk, have been detected in products made by various brands.

The National Computer Network Emergency Response Technical Team Coordination Center of China (CNCERT) found that some routers made by D-Link, Cisco, Linksys, Netgear, and Tenda contain backdoors.

The presence of a backdoor in commercial routers may expose users to attacks like DNS hijacking, information interception, and phishing.

Statistics released by CNCERT show that D-Link routers with the backdoor have at least 12,000 IP addresses.

The CNCERT said that although the center issued a warning to the router producers, some of them still haven't provided solutions or upgrades to prevent possible attacks.