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.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 16 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00405}

epss

{'score': 0.00353}


cve-icon MITRE

Status: PUBLISHED

Assigner: Mitsubishi

Published:

Updated: 2024-08-03T17:45:44.790Z

Reserved: 2020-12-17T00:00:00

Link: CVE-2021-20612

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2022-01-14T20:15:09.850

Modified: 2024-11-21T05:46:52.860

Link: CVE-2021-20612

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.