In mz-automation libiec61850 v1.4.0, a NULL Pointer Dereference was detected in the mmsServer_handleFileCloseRequest.c function of src/mms/iso_mms/server/mms_file_service.c. The vulnerability manifests as SEGV and causes the application to crash
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.