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CVE-2021-20596
Published: Jul 22, 2021
Modified: Aug 3, 2024
PUBLISHED
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.
| Vendor | Product | Versions |
|---|---|---|
n/a | MELSEC-F Series FX3U-ENET; FX3U-ENET-L; FX3U-ENET-P502 | affected Firmware version 1.14 and prior |
References
https://jvn.jp/vu/JVNVU94348759/index.html
x_refsource_MISC
https://us-cert.cisa.gov/ics/advisories/icsa-21-201-01
x_refsource_MISC
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