This indicates an attack attempt to exploit an Information Disclosure vulnerability in Geutebrueck re_porter 16.
The vulnerability is due to an error when the vulnerable software handles an HTTP request. A unauthenticated remote attacker may be able to exploit this to gain access to sensitive data, via a HTTP request.
Geutebrueck re_porter 16 firmware before version 7.8.974.20
Information Disclosure: Remote attackers can gain sensitive information from vulnerable systems.
Currently we are unaware of any vendor supplied patch or updates available for this issue.