CVE-2023-4625: Mitsubishielectric FX5S-30mr/es Firmware

Medium severity, CVSS 5.3. EPSS: 0.9% chance of exploitation in the next 30 days.

Improper Restriction of Excessive Authentication Attempts vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F/iQ-R Series CPU modules Web server function allows a remote unauthenticated attacker to prevent legitimate users from logging into the Web server function for a certain period after the attacker has attempted to log in illegally by continuously attempting unauthorized login to the Web server function. The impact of this vulnerability will persist while the attacker continues to attempt unauthorized login.

Affected products

• Mitsubishielectric FX5S-30mr/es Firmware: affected versions not specified
• Mitsubishielectric FX5S-30mt/es Firmware: affected versions not specified
• Mitsubishielectric FX5S-30mt/ess Firmware: affected versions not specified
• Mitsubishielectric FX5S-40mr/es Firmware: affected versions not specified
• Mitsubishielectric FX5S-40mt/es Firmware: affected versions not specified
• Mitsubishielectric FX5S-40mt/ess Firmware: affected versions not specified
• Mitsubishielectric FX5S-60mr/es Firmware: affected versions not specified
• Mitsubishielectric FX5S-60mt/es Firmware: affected versions not specified
• Mitsubishielectric FX5S-60mt/ess Firmware: affected versions not specified
• Mitsubishielectric FX5S-80mr/es Firmware: affected versions not specified
• Mitsubishielectric FX5S-80mt/es Firmware: affected versions not specified
• Mitsubishielectric FX5S-80mt/ess Firmware: affected versions not specified
• Mitsubishielectric FX5U-32mr/ds Firmware: affected versions not specified
• Mitsubishielectric FX5U-32mr/es Firmware: affected versions not specified
• Mitsubishielectric FX5U-32mt/ds Firmware: affected versions not specified
• Mitsubishielectric FX5U-32mt/dss Firmware: affected versions not specified
• Mitsubishielectric FX5U-32mt/es Firmware: affected versions not specified
• Mitsubishielectric FX5U-32mt/ess Firmware: affected versions not specified
• Mitsubishielectric FX5U-64mr/ds Firmware: affected versions not specified
• Mitsubishielectric FX5U-64mr/es Firmware: affected versions not specified
• Mitsubishielectric FX5U-64mt/ds Firmware: affected versions not specified
• Mitsubishielectric FX5U-64mt/dss Firmware: affected versions not specified
• Mitsubishielectric FX5U-64mt/es Firmware: affected versions not specified
• Mitsubishielectric FX5U-64mt/ess Firmware: affected versions not specified
• Mitsubishielectric FX5U-80mr/ds Firmware: affected versions not specified
• and 38 more

Published 2023-11-06. Last modified 2026-06-17.