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{
"data_type" : "CVE" ,
"data_format" : "MITRE" ,
"data_version" : "4.0" ,
"CVE_data_meta" : {
"ID" : "CVE-2021-20596" ,
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"ASSIGNER" : "Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp" ,
"STATE" : "PUBLIC"
} ,
"affects" : {
"vendor" : {
"vendor_data" : [
{
"vendor_name" : "n/a" ,
"product" : {
"product_data" : [
{
"product_name" : "MELSEC-F Series FX3U-ENET; FX3U-ENET-L; FX3U-ENET-P502" ,
"version" : {
"version_data" : [
{
"version_value" : "Firmware version 1.14 and prior"
} ,
{
"version_value" : "Firmware version 1.14 and prior"
} ,
{
"version_value" : "Firmware version 1.14 and prior"
}
]
}
}
]
}
}
]
}
} ,
"problemtype" : {
"problemtype_data" : [
{
"description" : [
{
"lang" : "eng" ,
"value" : "NULL Pointer Dereference"
}
]
}
]
} ,
"references" : {
"reference_data" : [
{
"refsource" : "MISC" ,
"name" : "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-006_en.pdf" ,
"url" : "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-006_en.pdf"
} ,
{
"refsource" : "MISC" ,
"name" : "https://jvn.jp/vu/JVNVU94348759/index.html" ,
"url" : "https://jvn.jp/vu/JVNVU94348759/index.html"
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} ,
{
"refsource" : "MISC" ,
"name" : "https://us-cert.cisa.gov/ics/advisories/icsa-21-201-01" ,
"url" : "https://us-cert.cisa.gov/ics/advisories/icsa-21-201-01"
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}
]
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} ,
"description" : {
"description_data" : [
{
"lang" : "eng" ,
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"value" : "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 attacker 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."
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}
]
}
}
