CVEvulnerability

CVE-2021-20612

7.5 HIGH Published 2022-01-14 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2022-01-14
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
7.8 HIGH — AV:N/AC:L/Au:N/C:N/I:N/A:C

Description

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.

Affected configurations

• mitsubishielectric fx3u-enet firmware (<= 1.14) • mitsubishielectric fx3u-enet-l firmware (<= 1.14) • mitsubishielectric fx3u-enet-p502 firmware (<= 1.14)

References