HOMEVULNERABILITIESCVE-2023-4562
CRITICAL

CVE-2023-4562

CWE-287Published: October 13, 2023· Updated: Jun 17, 2026

9.1
CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2023-4562 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 9.1.

From a weakness classification perspective (CWE-287): Authentication bypass vulnerabilities allow attackers to access protected resources without valid credentials.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected Vendors & Products

mitsubishielectric380 product(s)
fx3g-14 mr\/ds firmwarefx3g-14 mr\/dsfx3g-14 mr\/es firmwarefx3g-14 mr\/esfx3g-14 mt\/ds firmwarefx3g-14 mt\/dsfx3g-14 mt\/dss firmwarefx3g-14 mt\/dssfx3g-14 mt\/es firmwarefx3g-14 mt\/esfx3g-14 mt\/ess firmwarefx3g-14 mt\/ess+368
Source: NVD CPE · 380 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://jvn.jp/vu/JVNVU90509290/
ADVISORYhttps://www.cisa.gov/news-events/ics-advisories/icsa-23-285-13
ADVISORYhttps://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-012_en.pdf
ADVISORYhttps://jvn.jp/vu/JVNVU90509290/
ADVISORYhttps://www.cisa.gov/news-events/ics-advisories/icsa-23-285-13
ADVISORYhttps://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-012_en.pdf

All References (6)

→
https://jvn.jp/vu/JVNVU90509290/Third Party Advisory
→
https://www.cisa.gov/news-events/ics-advisories/icsa-23-285-13Third Party Advisory · US Government Resource
→
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-012_en.pdfVendor Advisory
→
https://jvn.jp/vu/JVNVU90509290/Third Party Advisory
→
https://www.cisa.gov/news-events/ics-advisories/icsa-23-285-13Third Party Advisory · US Government Resource
→
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-012_en.pdfVendor Advisory

Quick Facts

CVE IDCVE-2023-4562
CVSS Score9.1 / 10
SeverityCRITICAL
WeaknessCWE-287
CISA KEVNo
Affected1 vendor(s)
PublishedOct 13, 2023

Related CVEs (CWE-287)

CVE-2008-4223
10.0
CVE-2006-5268
10.0
CVE-2008-3703
10.0
CVE-2008-5355
10.0
CVE-2008-3466
10.0
CVE-2009-0138
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-4562 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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