This write up goes into detail about how real world cross site request forgery attacks can be used to hijack DNS on TP-Link routers.
You can download it from the following link: https://packetstormsecurity.com/files/download/123850/csrf-tplink-analysis.txt
Source: https://packetstormsecurity.com/files/123850/TP-Link-Cross-Site-Request-Forgery-Analysis.html