CVE-2023-4625

moderate-risk
Published 2023-11-06

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.

Do I need to act?

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0.11% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.3/10 Medium
NETWORK / LOW complexity

Affected Products (20)

Fx5U-32Mt\/Es Firmware
Fx5U-64Mt\/Es Firmware
Fx5U-80Mt\/Es Firmware
Fx5U-32Mr\/Es Firmware
Fx5U-64Mr\/Es Firmware
Fx5U-80Mr\/Es Firmware
Fx5U-32Mt\/Ds Firmware
Fx5U-64Mt\/Ds Firmware
Fx5U-80Mt\/Ds Firmware
Fx5U-32Mr\/Ds Firmware
Fx5U-64Mr\/Ds Firmware
Fx5U-80Mr\/Ds Firmware
Fx5U-32Mt\/Ess Firmware
Fx5U-64Mt\/Ess Firmware
Fx5U-80Mt\/Ess Firmware
Fx5U-32Mt\/Dss Firmware
Fx5U-64Mt\/Dss Firmware
Fx5U-80Mt\/Dss Firmware
Fx5Uc-32Mt\/D Firmware
Fx5Uc-64Mt\/D Firmware

Affected Vendors

Mitsubishielectric

References (6)

Third Party Advisory https://jvn.jp/vu/JVNVU94620134
Third Party Advisory https://www.cisa.gov/news-events/ics-advisories/icsa-23-306-02
Vendor Advisory https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-014_en.pdf
Third Party Advisory https://jvn.jp/vu/JVNVU94620134
Third Party Advisory https://www.cisa.gov/news-events/ics-advisories/icsa-23-306-02
Vendor Advisory https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-014_en.pdf
48
/ 100
moderate-risk
Severity 21/34 · High
Exploitability 0/34 · Minimal
Exposure 27/34 · High