Weak Encoding for Password vulnerability in Mitsubishi Electric Corporation GOT2000 Series GT27 model versions 01.49.000 and prior, GT25 model versions 01.49.000 and prior, GT23 model versions 01.49.000 and prior, GT21 model versions 01.49.000 and prior, GOT SIMPLE Series GS25 model versions 01.49.000 and prior, GS21 model versions 01.49.000 and prior, GT Designer3 Version1 (GOT2000) versions 1.295H and prior and GT SoftGOT2000 versions 1.295H and prior allows a remote unauthenticated attacker to obtain plaintext passwords by sniffing packets containing encrypted passwords and decrypting the encrypted passwords, in the case of transferring data with GT Designer3 Version1(GOT2000) and GOT2000 Series or GOT SIMPLE Series with the Data Transfer Security function enabled, or in the case of transferring data by the SoftGOT-GOT link function with GT SoftGOT2000 and GOT2000 series with the Data Transfer Security function enabled.

Improper input validation vulnerability in GOT2000 series GT27 model all versions, GOT2000 series GT25 model all versions, GOT2000 series GT23 model all versions, GOT2000 series GT21 model all versions, GOT SIMPLE series GS21 model all versions, and GT SoftGOT2000 all versions allows an remote unauthenticated attacker to write a value that exceeds the configured input range limit by sending a malicious packet to rewrite the device value. As a result, the system operation may be affected, such as malfunction.