CVE-2024-8403
highpriority · track · 0EPSS 0.007 · 52 %ileEURUUSEPSS · scored 2026-10-27
Improper Validation of Specified Type of Input vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series FX5-ENET versions 1.100 to 1.200 and FX5-ENET/IP versions 1.100 to 1.104 allows a remote attacker to cause a Denial of Service condition in Ethernet communication of the products by sending specially crafted SLMP packets.
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
A vendor fix is available.
- FixedMELSEC iQ-F Series FX5-ENETcisa_csaf_ot
Mitsubishi Electric is releasing fixed version 1.210 or later for MELSEC iQ-F Series FX5-ENET. Users may download a firmware update file from the link ["https://www.mitsubishielectric.com/fa/download/index.html"](https://www.mitsubishielectric.com/fa/download/index.html) and install it. For more information on the fixed version, refer to the Mitsubishi Electric security advisory at ["https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2024-009_en.pdf"](https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2024-009_en.pdf).
https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2024-009_en.pdf - FixedMELSEC iQ-F Series FX5-ENET/IPcisa_csaf_ot
Mitsubishi Electric is releasing fixed version 1.106 or later for MELSEC iQ-F Series FX5-ENET/IP. Please download a firmware update file from the link ["https://www.mitsubishielectric.com/fa/download/index.html"](https://www.mitsubishielectric.com/fa/download/index.html) and install it. For more information on the fixed version, refer to the Mitsubishi Electric security advisory at ["https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2024-009_en.pdf"](https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2024-009_en.pdf).
https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2024-009_en.pdf - MitigationMELSEC iQ-F Series FX5-ENETcisa_csaf_ot
For users of the affected products, Mitsubishi Electric recommends restricting physical access to the products, as well as to computers and network devices located within the same network as the products, to minimize the risk of exploiting this vulnerability.
- MitigationMELSEC iQ-F Series FX5-ENET/IPcisa_csaf_ot
For users of the affected products, Mitsubishi Electric recommends restricting physical access to the products, as well as to computers and network devices located within the same network as the products, to minimize the risk of exploiting this vulnerability.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.5
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (8)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- ICSA-24-324-01Mitsubishi Electric MELSEC iQ-F Series (Update A)2024-11-19icsa · cisa_csaf_otUS
Successful exploitation of this vulnerability could allow a remote attacker to cause a denial-of-service condition in Ethernet communication on the module by sending specially crafted SLMP packets. A system reset of the module is required for recovery.
also known as (5)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (10)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/cve-2024-8403cnnvd
- https://jvn.jp/vu/JVNVU97790713/cnnvd
- https://www.cisa.gov/news-events/ics-advisories/icsa-24-324-01cnnvd
- https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2024-009_en.pdfcnnvd
- https://jvn.jp/vu/JVNVU97790713/enisa_euvd
- https://www.cisa.gov/news-events/ics-advisories/icsa-24-324-01enisa_euvd
- https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2024-009_en.pdfenisa_euvd
- https://jvn.jp/vu/JVNVU97790713/nvd
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