Phicomm FIR151B A2, FIR302E A2, FIR300B A2, FIR303B A2 routers 3.0.1.17 and earlier were discovered to contain a remote command execution (RCE) vulnerability via the trHops parameter of the tracert function.
https://github.com/SLoSnow9879/Phicomm_Router/blob/main/Tracert_2.md