synced 2 MIN AGO
01 Record

CVE-2020-16850

Mitsubishi MELSEC iQ-R Series PLCs with firmware 49 allow an unauthenticated attacker to halt the industrial process by sending a crafted packet over the network. This denial of service attack exposes

UnratedPUBLISHEDCNA: mitre
CNA base scoreUnratedNo CNA CVSS vector

02 Description

Mitsubishi MELSEC iQ-R Series PLCs with firmware 49 allow an unauthenticated attacker to halt the industrial process by sending a crafted packet over the network. This denial of service attack exposes

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
2.14% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 81.6% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2020-11-30 21:34Z5 YR AGO
Last updated
2024-08-04 13:45Z2 YR AGO
Reserved
2020-08-04
Assigning CNA
mitre
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-20Improper Input ValidationClass
  • CWE-400Uncontrolled Resource ConsumptionClass
Data version
5.1
Document digest
36d1ac447b02833744e916a252724bd56fc29c78e15159f2b73f9d5e03228706

05 Affected products

VendorProductVersionsPlatforms
mitsubishielectricr00cpuNot specified—
mitsubishielectricr00cpu_firmwareNot specified—
mitsubishielectricr01cpuNot specified—
mitsubishielectricr01cpu_firmwareNot specified—
mitsubishielectricr02cpuNot specified—
mitsubishielectricr02cpu_firmwareNot specified—
mitsubishielectricr04cpuNot specified—
mitsubishielectricr04cpu_firmwareNot specified—
mitsubishielectricr08cpuNot specified—
mitsubishielectricr08cpu_firmwareNot specified—
mitsubishielectricr08pcpuNot specified—
mitsubishielectricr08pcpu_firmwareNot specified—
mitsubishielectricr08sfcpuNot specified—
mitsubishielectricr08sfcpu_firmwareNot specified—
mitsubishielectricr120cpuNot specified—
mitsubishielectricr120cpu_firmwareNot specified—
mitsubishielectricr120pcpuNot specified—
mitsubishielectricr120pcpu_firmwareNot specified—
mitsubishielectricr120sfcpuNot specified—
mitsubishielectricr120sfcpu_firmwareNot specified—
mitsubishielectricr16cpuNot specified—
mitsubishielectricr16cpu_firmwareNot specified—
mitsubishielectricr16mtcpuNot specified—
mitsubishielectricr16mtcpu_firmwareNot specified—
mitsubishielectricr16pcpuNot specified—
mitsubishielectricr16pcpu_firmwareNot specified—
mitsubishielectricr16sfcpuNot specified—
mitsubishielectricr16sfcpu_firmwareNot specified—
mitsubishielectricr32cpuNot specified—
mitsubishielectricr32cpu_firmwareNot specified—
mitsubishielectricr32mtcpuNot specified—
mitsubishielectricr32mtcpu_firmwareNot specified—
mitsubishielectricr32pcpuNot specified—
mitsubishielectricr32pcpu_firmwareNot specified—
mitsubishielectricr32sfcpuNot specified—
mitsubishielectricr32sfcpu_firmwareNot specified—
mitsubishielectricr64mtcpuNot specified—
mitsubishielectricr64mtcpu_firmwareNot specified—

06 References