What’s Vulnerable › Vulnerabilities

CVE-2020-12739

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-08-03 · updated 2026-06-17
• Weakness: CWE-400

Description

A denial-of-service vulnerability in the Fanuc i Series CNC (0i-MD and 0i Mate-MD) could allow an unauthenticated, remote attacker to cause an affected CNC to become inaccessible to other devices.

Affected products

• FANUC Power Motion I-Model A Firmware: all versions
• FANUC Series 0I-Mate D Firmware: all versions
• FANUC Series 0I-Model B Firmware: all versions
• FANUC Series 0I-Model C Firmware: all versions
• FANUC Series 0I-Model D Firmware: all versions
• FANUC Series 0I-Model F Firmware: all versions
• FANUC Series 0I-Model F Plus Firmware: all versions
• FANUC Series 16I Firmware: all versions
• FANUC Series 18I-Wb Firmware: all versions
• FANUC Series 18I Firmware: all versions
• FANUC Series 21I-Model B Firmware: all versions
• FANUC Series 30I Firmware: all versions
• FANUC Series 31I Firmware: all versions
• FANUC Series 32I-B Plus Firmware: all versions
• FANUC Series 32I-Model A Firmware: all versions
• FANUC Series 35I-B Firmware: all versions

References

• http://jvn.jp/en/jp/JVN84959128/index.html
• https://jvn.jp/en/jp/JVN84959128/index.html
• https://jvn.jp/jp/JVN84959128/index.html
• https://www.fanuc.co.jp/eindex.html
• http://jvn.jp/en/jp/JVN84959128/index.html
• https://jvn.jp/en/jp/JVN84959128/index.html
• https://jvn.jp/jp/JVN84959128/index.html
• https://www.fanuc.co.jp/eindex.html

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