CVE-2023-4562: Mitsubishielectric FX3G-14 Mr/ds Firmware

Critical severity, CVSS 9.1. EPSS: 0.9% chance of exploitation in the next 30 days.

Improper Authentication vulnerability in Mitsubishi Electric Corporation MELSEC-F Series main modules allows a remote unauthenticated attacker to obtain sequence programs from the product or write malicious sequence programs or improper data in the product without authentication by sending illegitimate messages.

Affected products

• Mitsubishielectric FX3G-14 Mr/ds Firmware: affected versions not specified
• Mitsubishielectric FX3G-14 Mr/es Firmware: affected versions not specified
• Mitsubishielectric FX3G-14 Mt/ds Firmware: affected versions not specified
• Mitsubishielectric FX3G-14 Mt/dss Firmware: affected versions not specified
• Mitsubishielectric FX3G-14 Mt/es Firmware: affected versions not specified
• Mitsubishielectric FX3G-14 Mt/ess Firmware: affected versions not specified
• Mitsubishielectric FX3G-14mr/ds Firmware: affected versions not specified
• Mitsubishielectric FX3G-14mr/es-A Firmware: affected versions not specified
• Mitsubishielectric FX3G-14mr/es Firmware: affected versions not specified
• Mitsubishielectric FX3G-14mt/ds Firmware: affected versions not specified
• Mitsubishielectric FX3G-14mt/dss Firmware: affected versions not specified
• Mitsubishielectric FX3G-14mt/es-A Firmware: affected versions not specified
• Mitsubishielectric FX3G-14mt/es Firmware: affected versions not specified
• Mitsubishielectric FX3G-14mt/ess Firmware: affected versions not specified
• Mitsubishielectric FX3G-232adp(-Mb) Firmware: affected versions not specified
• Mitsubishielectric FX3G-24 Mr/ds Firmware: affected versions not specified
• Mitsubishielectric FX3G-24 Mr/es Firmware: affected versions not specified
• Mitsubishielectric FX3G-24 Mt/ds Firmware: affected versions not specified
• Mitsubishielectric FX3G-24 Mt/dss Firmware: affected versions not specified
• Mitsubishielectric FX3G-24 Mt/es Firmware: affected versions not specified
• Mitsubishielectric FX3G-24 Mt/ess Firmware: affected versions not specified
• Mitsubishielectric FX3G-24mr/ds Firmware: affected versions not specified
• Mitsubishielectric FX3G-24mr/es-A Firmware: affected versions not specified
• Mitsubishielectric FX3G-24mr/es Firmware: affected versions not specified
• Mitsubishielectric FX3G-24mt/ds Firmware: affected versions not specified
• and 165 more

Published 2023-10-13. Last modified 2026-06-17.