CVE-2021-20591

Published: Jun 11, 2021Updated: Nov 21, 2024 Sources: CVE List NVD csafCWE-400

7.5HIGH

NVD MITRE

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:NIntegrity

None

A:HAvailability

High

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Weaknesses

CWE-400

Affected Products

mitsubishielectric

commercial·JPaka mitsubishi electric

and 13 more affected products View all →

Exploitability

Official Patch Available

Is your org exposed to CVE-2021-20591?Request an assessment to establish which checks are appropriate for your systems. Check my exposure

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Impact

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References

https://jvn.jp/vu/JVNVU98060539/index.html

jvn.jp

https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-003_en.pdf

mitsubishielectric.com

https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2021/icsa-21-147-05.json

raw.githubusercontent.com

and 5 more references View all →

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