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Severity
Medium
Analysis Summary
Mitsubishi MELSEC iQ-R Series PLCs with firmware 33 allow attackers to halt the industrial process by sending an unauthenticated crafted packet over the network, because this denial of service attack consumes excessive CPU time. After halting, physical access to the PLC is required in order to restore production.
Impact
Resource Exhaustion
Affected Vendors
Mitsubishi Electric
Affected Products
MELSEC iQ-R series
Remediation
Refer to vendor’s advisory for the complete list of affected products and upgraded patches.