CVE-2020-16850 Information

Description

Mitsubishi MELSEC iQ-R Series PLCs with firmware 49 allow an unauthenticated attacker to halt the industrial process by sending a crafted packet over the network. This denial of service attack exposes Improper Input Validation. After halting physical access to the PLC is required in order to restore production and the device state is lost. This is related to R04CPU RJ71GF11-T2 R04CPU and RJ71GF11-T2.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

https://us-cert.cisa.gov/ics/advisories/icsa-20-282-02 https://blog.scadafence.com/vulnerability-in-mitsubishi-electric-melsec-iq-r-series

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5