TP-Link TL-WR845N(UN)V4201214, TL-WR845N(UN)V4200909 and TL-WR845N(UN)V4190219 were discovered to contain weak default credentials for the Administrator account.

TP-Link TL-WR845N(UN)V4190219 was discovered to transmit credentials in base64 encoded form, which can be easily decoded by an attacker executing a man-in-the-middle attack.

TL-WR845N(UN)V4201214, TP-Link TL-WR845N(UN)V4200909, and TL-WR845N(UN)V4190219 was discovered to transmit user credentials in plaintext after executing a factory reset.

A password-disclosure issue in the web interface on certain TP-Link devices allows a remote attacker to get full administrative access to the web panel. This affects WA901ND devices before 3.16.9(201211) beta, and Archer C5, Archer C7, MR3420, MR6400, WA701ND, WA801ND, WDR3500, WDR3600, WE843N, WR1043ND, WR1045ND, WR740N, WR741ND, WR749N, WR802N, WR840N, WR841HP, WR841N, WR842N, WR842ND, WR845N, WR940N, WR941HP, WR945N, WR949N, and WRD4300 devices.