This indicates an attack attempt to exploit an Information Disclosure vulnerability in Schneider Electric Modicon M580 TFTP server.
An unauthenticated attacker can exploit this vulnerability by sending a TFTP read request to the vulnerable device. Successful exploitation allows the user to download specific files on the vulnerable device containing sensitive information.
Schneider Electric Modicon M580 BMEP582040 SV2.80
Information Disclosure: Remote attackers can gain sensitive information from vulnerable systems.
Apply the most recent upgrade or patch from the vendor.