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Improper Validation of Specified Quantity in Input vulnerability in Mitsubishi Electric MELSEC iQ-R Series R08PCPU, R16PCPU, R32PCPU, and R120PCPU allows an unauthenticated attacker to read device data or part of a control program from the affected product, write device data in the affected product, or cause a denial of service (DoS) condition on the affected product by sending a specially crafted packet containing a specific command to the affected product.

CVE-2025-15080 is a vulnerability classified under CWE-1284 (Improper Validation of Specified Quantity in Input) found in Mitsubishi Electric Corporation's MELSEC iQ-R Series programmable logic controllers (PLCs), specifically models R08PCPU, R16PCPU, R32PCPU, and R120PCPU running firmware version 48 or earlier. The flaw allows an unauthenticated attacker to send specially crafted packets containing specific commands that exploit improper input validation mechanisms. This exploitation can lead to unauthorized reading of device data or portions of the control program, unauthorized writing or modification of device data, or triggering a denial of service (DoS) condition that disrupts the device's operation. The vulnerability does not require any authentication or user interaction, making it remotely exploitable over the network with low attack complexity. The CVSS 4.0 base score of 8.8 reflects the high impact on confidentiality, integrity, and availability, with no privileges or user interaction needed. The vulnerability affects critical industrial control systems that rely on these PLCs for automation and process control, potentially allowing attackers to manipulate industrial processes, steal sensitive operational data, or cause system outages. No known exploits have been reported in the wild yet, and no patches are currently linked, indicating the need for vigilance and proactive mitigation. The improper validation likely involves insufficient checks on the quantity or size parameters in input commands, enabling buffer overreads, unauthorized memory access, or logic errors leading to the described impacts. This vulnerability highlights the importance of robust input validation in industrial control system firmware to prevent remote manipulation and disruption.

Detailed information about CVE-2025-15080: CWE-1284 Improper Validation of Specified Quantity in Input in Mitsubishi Electric Corporation MELSEC iQ-R Series R08

CVE-2025-15080: CWE-1284 Improper Validation of Specified Quantity in Input in Mitsubishi Electric Corporation MELSEC iQ-R Series R08PCPU - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2025-15080: CWE-1284 Improper Validation of Specified Quantity in Input in Mitsubishi Electric Corporation MELSEC iQ-R Series R08PCPU

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