Important additional evidence
I have now reproduced the exact same crash on two completely vanilla server instances:
Vanilla DayZ Server launched directly from a separate Steam installation, without mods and without CFTools Architect.
Vanilla DayZ Server managed by CFTools Architect, without mods.
Both WinDbg analyses show the same crash signature as the previously attached modded server dumps:
INVALID_POINTER_READ
Exception 0xC0000005
DayZServer_x64+0x2E0E72
Failure Hash {fa0a711d-8818-27cc-25ee-09a3efe341d0}
RAX = 1
attempted read from address 0x41
failing instruction mov rdx, qword ptr [rax+40h]
DayZ Server version 1.29.163.451
Unfortunately, I cannot attach any additional files to this issue anymore. If needed, I can provide the WinDbg logs, vanilla crash dumps and server logs in another way.