Not under OpenBSD i686.
Also, the more heterogeneous it's a CPU architecture support, the least exploitable a service will be.
See? This is exactly my point. The last 32-bit only Intel CPUs were the original Intel Core series. Core 2 was already 64-bit, and it was released in 2006.
i686 should have died a long, long time ago.
Please elaborate on your last point.