Unrated severityNVD Advisory· Published Jun 11, 2021· Updated Aug 3, 2024

CVE-2021-20591

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Mitsubishi Electric/MELSEC iQ-R series CPU modulesdescription
Mitsubishielectric/MELSEC iQ-F Series CPU modulellm-fuzzy

Patches

Vulnerability mechanics

References

jvn.jp/vu/JVNVU98060539/index.htmlmitrex_refsource_MISC
www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-003_en.pdfmitrex_refsource_MISC

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