Screen Creator Advance2, HMI GC-A2 series, and Real time remote monitoring and control tool Screen Creator Advance2 versions prior to Ver.0.1.1.3 Build01, HMI GC-A2 series(GC-A22W-CW, GC-A24W-C(W), GC-A26W-C(W), GC-A24, GC-A24-M, GC-A25, GC-A26, and GC-A26-J2), and Real time remote monitoring and control tool(Remote GC) allows a local attacker to bypass authentication due to the improper check for the Remote control setting's account names. This may allow attacker who can access the HMI from Real time remote monitoring and control tool may perform arbitrary operations on the HMI. As a result, the information stored in the HMI may be disclosed, deleted or altered, and/or the equipment may be illegally operated via the HMI.

Screen Creator Advance2, HMI GC-A2 series, and Real time remote monitoring and control tool Screen Creator Advance2 versions prior to Ver.0.1.1.3 Build01, HMI GC-A2 series(GC-A22W-CW, GC-A24W-C(W), GC-A26W-C(W), GC-A24, GC-A24-M, GC-A25, GC-A26, and GC-A26-J2), and Real time remote monitoring and control tool(Remote GC) allows a local attacker to bypass authentication due to the improper check for the Remote control setting's account names. This may allow attacker who can access the HMI from Real time remote monitoring and control tool may perform arbitrary operations on the HMI. As a result, the information stored in the HMI may be disclosed, deleted or altered, and/or the equipment may be illegally operated via the HMI.

Screen Creator Advance2 provided by KOYO ELECTRONICS INDUSTRIES CO., LTD. is a screen development tool for KOYO ELECTRONICS's HMI. Screen Creator Advance2 contains an authentication bypass vulnerability (CWE-807) due to the improper check for the Remote control setting's account names. KOYO ELECTRONICS INDUSTRIES CO., LTD. reported this vulnerability to IPA to notify users of its solution through JVN. JPCERT/CC and KOYO ELECTRONICS INDUSTRIES CO., LTD. coordinated under the Information Security Early Warning Partnership.