An issue was discovered on certain Nuki Home Solutions devices. There is a buffer overflow over the encrypted token parsing logic in the HTTP service that allows remote code execution. This affects Nuki Bridge v1 before 1.22.0 and v2 before 2.13.2.
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).