Home/CVE/Improper Authentication vulnerability in Mitsubishi Electric Corporation MELSEC-F Series main modules allows a remote un
CVE

CVE-2023-4562

Improper Authentication vulnerability in Mitsubishi Electric Corporation MELSEC-F Series main modules allows a remote un

Improper Authentication vulnerability in Mitsubishi Electric Corporation MELSEC-F Series main modules allows a remote unauthenticated attacker to obtain sequence programs from the product or write malicious sequence programs or improper data in the product without authentication by sending illegitimate messages.

CRITICAL · CVSS 9.1 EPSS 0.00232
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-287Improper Authentication
CWE-287Improper Authentication
▤

Affected Products & Versions

60
mitsubishielectric fx3g-14 mr\/ds firmwareall versions
mitsubishielectric fx3g-14 mr\/es firmwareall versions
mitsubishielectric fx3g-14 mt\/ds firmwareall versions
mitsubishielectric fx3g-14 mt\/dss firmwareall versions
mitsubishielectric fx3g-14 mt\/es firmwareall versions
mitsubishielectric fx3g-14 mt\/ess firmwareall versions
mitsubishielectric fx3g-14mr\/ds firmwareall versions
mitsubishielectric fx3g-14mr\/es firmwareall versions
▣

Scoring & Timeline

9.1
CRITICAL · CVSS v3.1 · Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD13 Oct 2023 · 02:15 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

1
cisa-csafcisa-csaf-csaf_files-OT-white-2023-icsa-23-285-13
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://jvn.jp/vu/JVNVU90509290/Third Party Advisory
https://www.cisa.gov/news-events/ics-advisories/icsa-23-285-13Third Party AdvisoryUS Government Resource
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-012_en.pdfVendor Advisory
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