CVE-2021-20613

Improper initialization vulnerability in MELSEC-F series FX3U-ENET Firmware version 1.16 and prior, FX3U-ENET-L Firmware version 1.16 and prior and FX3U-ENET-P502 Firmware version 1.16 and prior allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition in communication function of the product by sending specially crafted packets. Control by MELSEC-F series PLC is not affected by this vulnerability, but system reset is required for recovery.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
MitsubishiCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 56%
VendorProductVersion
mitsubishielectricfx3u-enet_firmware
𝑥
≤ 1.16
mitsubishielectricfx3u-enet-l_firmware
𝑥
≤ 1.16
mitsubishielectricfx3u-enet-p502_firmware
𝑥
≤ 1.16
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://jvn.jp/vu/JVNVU93268332/index.html
https://www.cisa.gov/uscert/ics/advisories/icsa-22-013-07
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-024_en.pdf
https://jvn.jp/vu/JVNVU93268332/index.html
https://www.cisa.gov/uscert/ics/advisories/icsa-22-013-07
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-024_en.pdf