Vulnerability Details CVE-2021-20612
Lack of administrator control over security vulnerability in MELSEC-F series FX3U-ENET Firmware version 1.14 and prior, FX3U-ENET-L Firmware version 1.14 and prior and FX3U-ENET-P502 Firmware version 1.14 and prior allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition in communication function of the product or other unspecified effects by sending specially crafted packets to an unnecessary opening of TCP port. Control by MELSEC-F series PLC is not affected by this vulnerability, but system reset is required for recovery.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 60.1%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 7.8
References
- https://jvn.jp/vu/JVNVU93268332/index.html
- https://www.cisa.gov/uscert/ics/advisories/icsa-22-013-01
- https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-023_en.pdf
- https://jvn.jp/vu/JVNVU93268332/index.html
- https://www.cisa.gov/uscert/ics/advisories/icsa-22-013-01
- https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-023_en.pdf
Products affected by CVE-2021-20612
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cpe:2.3:h:mitsubishielectric:fx3u-enet-l:-
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cpe:2.3:h:mitsubishielectric:fx3u-enet-p502:-
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cpe:2.3:h:mitsubishielectric:fx3u-enet:-
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cpe:2.3:o:mitsubishielectric:fx3u-enet-l_firmware:-
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cpe:2.3:o:mitsubishielectric:fx3u-enet-p502_firmware:-
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cpe:2.3:o:mitsubishielectric:fx3u-enet_firmware:-