Mercusys MW325R EU V3 (Firmware MW325R(EU)_V3_1.11.0 Build 221019) is vulnerable to a stack-based buffer overflow, which could allow an attacker to execute arbitrary code. Exploiting the vulnerability requires authentication.
A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).