In case anyone cares for the technical reason behind the false positives.:
The issue got cause by the different meaning of . and , in numbers in different regions of the world. Normally the localization settings of Windows are meant to solve that by providing a program with the right settings for the local PC. However while IW4m-Admin did follow these coding conventions CoD did not and always used the US number format. When that happens on a PC where the localization settings are set to a region where . and , are the opposite tiny numbers are seen as enormous ones and vice versa. This is why IW4m-Admin did get those impossible for a legit player values while the player in fact was not cheating.