A vulnerability was found in Netadmin Software NetAdmin IAM up to 3.5 and classified as problematic. Affected by this issue is some unknown functionality of the file /controller/api/Answer/ReturnUserQuestionsFilled of the component HTTP POST Request Handler. The manipulation of the argument username leads to information exposure through discrepancy. The attack may be launched remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.