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7.5
CVSSv3

CVE-2021-20596

Published: 22/07/2021 Updated: 02/08/2021
CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10
CVSS v3 Base Score: 7.5 | Impact Score: 3.6 | Exploitability Score: 3.9
VMScore: 445
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
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Vulnerability Summary

NULL Pointer Dereference in MELSEC-F Series FX3U-ENET firmware version 1.14 and prior, FX3U-ENET-L firmware version 1.14 and prior and FX3U-ENET-P502 firmware version 1.14 and prior allows a remote unauthenticated malicious user to cause a DoS condition in communication by sending specially crafted packets. Control by MELSEC-F series PLC is not affected and system reset is required for recovery.

Vulnerability Trend

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mitsubishielectric fx3u-enet-l firmware

mitsubishielectric fx3u-enet-p502 firmware

mitsubishielectric fx3u-enet firmware

References

CWE-476https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-006_en.pdfhttps://jvn.jp/vu/JVNVU94348759/index.htmlhttps://us-cert.cisa.gov/ics/advisories/icsa-21-201-01https://nvd.nist.gov
CVSSv3
CVSSv2
CVSSv3
VMScore
Recommendations:
CVE-2024-26925CVE-2023-41826LFICVE-2022-22364CVE-2024-2887command injectionremote code executionCVE-2024-34446CVE-2022-48699
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