In tests with version 1.255, the client accepted the file without checking if 1.255 > currently installed version (due to poor version comparison treating “255” as string “2.5.5”?).
Analysis of TFTP-Based Firmware Upgrade Mechanisms: A Case Study of Version 1.255 Download Anomalies i--- Tftp Upgrade Firmware Version 1.255 Download
TFTP, firmware upgrade, version 1.255, downgrade attack, block number wrap, IoT security. In tests with version 1