CVE-2023-1424: Mitsubishielectric Melsec Iq-FX5U-32mr/ds Firmware

High severity, CVSS 8.1. EPSS: 3.4% chance of exploitation in the next 30 days.

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series CPU modules and MELSEC iQ-R Series CPU modules allows a remote unauthenticated attacker to cause a denial of service (DoS) condition or execute malicious code on a target product by sending specially crafted packets. A system reset of the product is required for recovery from a denial of service (DoS) condition and malicious code execution.

Affected products

• Mitsubishielectric Melsec Iq-FX5U-32mr/ds Firmware: affected versions not specified
• Mitsubishielectric Melsec Iq-FX5U-32mr/dss Firmware: affected versions not specified
• Mitsubishielectric Melsec Iq-FX5U-32mr/es Firmware: affected versions not specified
• Mitsubishielectric Melsec Iq-FX5U-32mr/ess Firmware: affected versions not specified
• Mitsubishielectric Melsec Iq-FX5U-32mt/ds Firmware: affected versions not specified
• Mitsubishielectric Melsec Iq-FX5U-32mt/dss Firmware: affected versions not specified
• Mitsubishielectric Melsec Iq-FX5U-32mt/es Firmware: affected versions not specified
• Mitsubishielectric Melsec Iq-FX5U-32mt/ess Firmware: affected versions not specified
• Mitsubishielectric Melsec Iq-FX5U-64mr/ds Firmware: affected versions not specified
• Mitsubishielectric Melsec Iq-FX5U-64mr/dss Firmware: affected versions not specified
• Mitsubishielectric Melsec Iq-FX5U-64mr/es Firmware: affected versions not specified
• Mitsubishielectric Melsec Iq-FX5U-64mr/ess Firmware: affected versions not specified
• Mitsubishielectric Melsec Iq-FX5U-64mt/ds Firmware: affected versions not specified
• Mitsubishielectric Melsec Iq-FX5U-64mt/dss Firmware: affected versions not specified
• Mitsubishielectric Melsec Iq-FX5U-64mt/es Firmware: affected versions not specified
• Mitsubishielectric Melsec Iq-FX5U-64mt/ess Firmware: affected versions not specified
• Mitsubishielectric Melsec Iq-FX5U-80mr/ds Firmware: affected versions not specified
• Mitsubishielectric Melsec Iq-FX5U-80mr/dss Firmware: affected versions not specified
• Mitsubishielectric Melsec Iq-FX5U-80mr/es Firmware: affected versions not specified
• Mitsubishielectric Melsec Iq-FX5U-80mr/ess Firmware: affected versions not specified
• Mitsubishielectric Melsec Iq-FX5U-80mt/ds Firmware: affected versions not specified
• Mitsubishielectric Melsec Iq-FX5U-80mt/dss Firmware: affected versions not specified
• Mitsubishielectric Melsec Iq-FX5U-80mt/es Firmware: affected versions not specified
• Mitsubishielectric Melsec Iq-FX5U-80mt/ess Firmware: affected versions not specified
• Mitsubishielectric Melsec Iq-FX5UC-32mr/dds Firmware: affected versions not specified
• and 14 more

Published 2023-05-24. Last modified 2026-06-17.