01 Record

CVE-2023-1424

Denial-of-Service and Remote Code Execution Vulnerability in MELSEC Series CPU module

CriticalPUBLISHEDCNA: Mitsubishi

CNA base score10.0 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

View raw JSON

02 Description

Denial-of-Service and Remote Code Execution Vulnerability in MELSEC Series CPU module

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

3.44% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 87.9% of scored records. A rank, not a probability.

NVD base score

8.1 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/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

2023-05-24 04:39Z3 YR AGO

Last updated

2025-03-05 18:59Z1 YR AGO

Reserved

2023-03-16

Assigning CNA

Mitsubishi

Record state

PUBLISHED

Severity

Critical (CVSS 10.0)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Weaknesses

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')Base

Data version

5.1

Document digest

309719246678e30a08ead9b5f77461aeea3e00c9c0883f836017df74ea624767

05 Affected products

VendorProductVersionsPlatforms

Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-32MT/ESSerial number 17X**** or later, versions from 1.220 to 1.281—

Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-64MT/ESSerial number 17X**** or later, versions from 1.220 to 1.281—

Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-80MT/ESSerial number 17X**** or later, versions from 1.220 to 1.281—

Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-32MR/ESSerial number 17X**** or later, versions from 1.220 to 1.281—

Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-64MR/ESSerial number 17X**** or later, versions from 1.220 to 1.281—

Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-80MR/ESSerial number 17X**** or later, versions from 1.220 to 1.281—

Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-32MT/DSSerial number 17X**** or later, versions from 1.220 to 1.281—

Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-64MT/DSSerial number 17X**** or later, versions from 1.220 to 1.281—

Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-80MT/DSSerial number 17X**** or later, versions from 1.220 to 1.281—

Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-32MR/DSSerial number 17X**** or later, versions from 1.220 to 1.281—

Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-64MR/DSSerial number 17X**** or later, versions from 1.220 to 1.281—

Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-80MR/DSSerial number 17X**** or later, versions from 1.220 to 1.281—

Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-32MT/ESSSerial number 17X**** or later, versions from 1.220 to 1.281—

Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-64MT/ESSSerial number 17X**** or later, versions from 1.220 to 1.281—

Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-80MT/ESSSerial number 17X**** or later, versions from 1.220 to 1.281—

Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-32MT/DSSSerial number 17X**** or later, versions from 1.220 to 1.281—

Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-64MT/DSSSerial number 17X**** or later, versions from 1.220 to 1.281—

Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-80MT/DSSSerial number 17X**** or later, versions from 1.220 to 1.281—

Mitsubishi Electric CorporationMELSEC iQ-F Series FX5UC-32MT/DSerial number 17X**** or later, versions from 1.220 to 1.281—

Mitsubishi Electric CorporationMELSEC iQ-F Series FX5UC-64MT/DSerial number 17X**** or later, versions from 1.220 to 1.281—

Mitsubishi Electric CorporationMELSEC iQ-F Series FX5UC-96MT/DSerial number 17X**** or later, versions from 1.220 to 1.281—

Mitsubishi Electric CorporationMELSEC iQ-F Series FX5UC-32MT/DSSSerial number 17X**** or later, versions from 1.220 to 1.281—

Mitsubishi Electric CorporationMELSEC iQ-F Series FX5UC-64MT/DSSSerial number 17X**** or later, versions from 1.220 to 1.281—

Mitsubishi Electric CorporationMELSEC iQ-F Series FX5UC-96MT/DSSSerial number 17X**** or later, versions from 1.220 to 1.281—

Mitsubishi Electric CorporationMELSEC iQ-F Series FX5UC-32MT/DS-TSversions from 1.220 to 1.281—

Mitsubishi Electric CorporationMELSEC iQ-F Series FX5UC-32MT/DSS-TSversions from 1.220 to 1.281—

Mitsubishi Electric CorporationMELSEC iQ-F Series FX5UC-32MR/DS-TSversions from 1.220 to 1.281—

Mitsubishi Electric CorporationMELSEC iQ-R Series R00CPUversions 35 and prior—

Mitsubishi Electric CorporationMELSEC iQ-R Series R01CPUversions 35 and prior—

Mitsubishi Electric CorporationMELSEC iQ-R Series R02CPUversions 35 and prior—

Mitsubishi Electric CorporationMELSEC iQ-R Series R04CPUversions from 12 to 68—

Mitsubishi Electric CorporationMELSEC iQ-R Series R08CPUversions from 12 to 68—

Mitsubishi Electric CorporationMELSEC iQ-R Series R16CPUversions from 12 to 68—

Mitsubishi Electric CorporationMELSEC iQ-R Series R32CPUversions from 12 to 68—

Mitsubishi Electric CorporationMELSEC iQ-R Series R120CPUversions from 12 to 68—

Mitsubishi Electric CorporationMELSEC iQ-R Series R04ENCPUversions from 12 to 68—

Mitsubishi Electric CorporationMELSEC iQ-R Series R08ENCPUversions from 12 to 68—

Mitsubishi Electric CorporationMELSEC iQ-R Series R16ENCPUversions from 12 to 68—

Mitsubishi Electric CorporationMELSEC iQ-R Series R32ENCPUversions from 12 to 68—

Mitsubishi Electric CorporationMELSEC iQ-R Series R120ENCPUversions from 12 to 68—

Mitsubishi Electric CorporationMELSEC iQ-R Series R08SFCPUversions from 26 to 31—

Mitsubishi Electric CorporationMELSEC iQ-R Series R16SFCPUversions from 26 to 31—

Mitsubishi Electric CorporationMELSEC iQ-R Series R32SFCPUversions from 26 to 31—

Mitsubishi Electric CorporationMELSEC iQ-R Series R120SFCPUversions from 26 to 31—

Mitsubishi Electric CorporationMELSEC iQ-R Series R08PCPUversions from 3 to 37—

Mitsubishi Electric CorporationMELSEC iQ-R Series R16PCPUversions from 3 to 37—

Mitsubishi Electric CorporationMELSEC iQ-R Series R32PCPUversions from 3 to 37—

Mitsubishi Electric CorporationMELSEC iQ-R Series R120PCPUversions from 3 to 37—

06 References

www.mitsubishielectric.comhttps://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-003_en.pdf
jvn.jphttps://jvn.jp/vu/JVNVU94650413
www.cisa.govhttps://www.cisa.gov/news-events/ics-advisories/icsa-23-143-03
www.talosintelligence.comhttps://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1727

01 Record index

CVE-2023-1424

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2023-1424

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References