Description
Uncontrolled Resource Consumption vulnerability in Mitsubishi Electric MELSEC iQ-R series CPU modules (R00/01/02CPU all versions, R04/08/16/32/120(EN)CPU all versions, R08/16/32/120SFCPU all versions, R08/16/32/120PCPU all versions, R08/16/32/120PSFCPU all versions) allows a remote unauthenticated attacker to prevent legitimate clients from connecting to the MELSOFT transmission port (TCP/IP) by not closing a connection properly, which may lead to a denial of service (DoS) condition.
References (2)
Core 2
Core References
Vendor Advisory x_refsource_misc
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-003_en.pdf
Third Party Advisory x_refsource_misc
https://jvn.jp/vu/JVNVU98060539/index.html
Scores
CVSS v3
7.5
EPSS
0.0050
EPSS Percentile
66.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-400
Status
published
Products (20)
mitsubishielectric/r00cpu_firmware
mitsubishielectric/r01cpu_firmware
mitsubishielectric/r02cpu_firmware
mitsubishielectric/r04cpu_firmware
mitsubishielectric/r08cpu_firmware
mitsubishielectric/r08pcpu_firmware
mitsubishielectric/r08psfcpu_firmware
mitsubishielectric/r08sfcpu_firmware
mitsubishielectric/r120cpu_firmware
mitsubishielectric/r120pcpu_firmware
... and 10 more
Published
Jun 11, 2021
Tracked Since
Feb 18, 2026