Threats tagged 'ghsa-rjwg-vv9p-fqpg'

Certain unattended payment solutions by KioSoft use MiFare Classic NFC cards to store account balances insecurely. Attackers can read and write the card data, identify the cash value and checksum fields, and manipulate them to load arbitrary amounts of money (up to $65,535) onto the card. This vulnerability allows unauthorized balance modification, enabling fraudulent payments.