Same issue here, even with the new 5.x versions. It's been happening for at least the past 4 versions of the software, and crashes up to 5 times per day. It's ridiculous that this bug has been around so long.
Faulting application name: iCUE.exe, version: 5.1.1114.0, time stamp: 0x645ce7af
Faulting module name: ucrtbase.dll, version: 10.0.23471.1000, time stamp: 0xc66a23fe
Exception code: 0xc0000409
Fault offset: 0x000000000007f61e
Faulting process id: 0x0x3124
Faulting application start time: 0x0x1D997EB12261717
Faulting application path: C:\Program Files\Corsair\Corsair\Corsair iCUE5 Software\iCUE.exe
Faulting module path: C:\WINDOWS\System32\ucrtbase.dll
Report Id: d4cbe8f9-bfad-40a9-b6bd-535935a9eecc
Faulting package full name:
Faulting package-relative application ID: