The Zabbix Agent binaries on Windows are lacking various basic security mitigations like DEP, ASLR and High Entropy ASLR (on 64-bit environments).
Not having these mitigations would make it easier for an attacker to write a reliable exploit in case of a memory corruption vulnerability in the agent.

So, this is not a direct vulnerability, but rather a defense-in-depth measure that could prevent successful exploitation of future known and unknown vulnerabilities.

Looking at the source code, you seem to be using MinGW as a compiler. As far as I can find (I'm not an expert on MinGW at all) modern versions of MinGW can use these compiler flags to enable these mitigations:

DEP:
Wl,-nxcompat

ASLR:
Wl,-dynamicbase

High Entropy ASLR (64-bit binaries only):
Wl,-high-entropy-va

To verify it's indeed active, you could use the Sysinternals Suite' Process Explorer, which is able to display if DEP/ASLR is enabled per process.

Could the Windows binaries please be compiled with these flags, to improve the security of the Zabbix Agent on Windows?