CVE-2021-20596

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.

References

https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-006_en.pdf

https://us-cert.cisa.gov/ics/advisories/icsa-21-201-01

https://jvn.jp/vu/JVNVU94348759/index.html

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3