Vulnerability Details CVE-2021-20596
NULL Pointer Dereference 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 DoS condition in communication by sending specially crafted packets. Control by MELSEC-F series PLC is not affected and system reset is required for recovery.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.006
EPSS Ranking 67.5%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
References
- https://jvn.jp/vu/JVNVU94348759/index.html
- https://us-cert.cisa.gov/ics/advisories/icsa-21-201-01
- https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-006_en.pdf
- https://jvn.jp/vu/JVNVU94348759/index.html
- https://us-cert.cisa.gov/ics/advisories/icsa-21-201-01
- https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-006_en.pdf
Products affected by CVE-2021-20596
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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:-