CVE-2021-20600

MEDIUM

Mitsubishi Electric MELSEC iQ-R R12CCPU-V < 16 - DoS via Packet Flood

Title source: llm
STIX 2.1

Description

Uncontrolled resource consumption in Mitsubishi Electric MELSEC iQ-R series C Controller Module R12CCPU-V Firmware Versions "16" and prior allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition by sending a large number of packets in a short time while the module starting up. System reset is required for recovery.

References (3)

Core 3
Core References
Third Party Advisory x_refsource_misc
https://jvn.jp/vu/JVNVU94914666/index.html
Third Party Advisory, US Government Resource x_refsource_misc
https://us-cert.cisa.gov/ics/advisories/icsa-21-280-04

Scores

CVSS v3 5.9
EPSS 0.0052
EPSS Percentile 66.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-400
Status published
Products (1)
mitsubishielectric/r12ccpu-v_firmware < 16
Published Oct 08, 2021
Tracked Since Feb 18, 2026