CVE-2021-20596

State: Published
Severity: Not scored
Published: Jul 22, 2021
Updated: Aug 3, 2024
Reserved: Dec 17, 2020

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
MELSEC-F Series FX3U-ENET; FX3U-ENET-L; FX3U-ENET-P502n/a	Firmware version 1.14 and priorAffected

References

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

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