HOMEVULNERABILITIESCVE-2023-1424
HIGH

CVE-2023-1424

CWE-120Published: May 24, 2023· Updated: Jun 17, 2026

8.1
CVSS v3.1

Official Description

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series CPU modules and MELSEC iQ-R Series CPU modules allows a remote unauthenticated attacker to cause a denial of service (DoS) condition or execute malicious code on a target product by sending specially crafted packets. A system reset of the product is required for recovery from a denial of service (DoS) condition and malicious code execution.

NVD Source

Technical Analysis

CVE-2023-1424 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), availability disruption (denial of service), with a CVSS base score of 8.1.

CVSS v3.1 Vector Breakdown

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

Affected Vendors & Products

mitsubishielectric78 product(s)
melsec iq-fx5u-32mr\/ds firmwaremelsec iq-fx5u-32mr\/dsmelsec iq-fx5u-32mr\/dss firmwaremelsec iq-fx5u-32mr\/dssmelsec iq-fx5u-32mr\/es firmwaremelsec iq-fx5u-32mr\/esmelsec iq-fx5u-32mr\/ess firmwaremelsec iq-fx5u-32mr\/essmelsec iq-fx5u-32mt\/ds firmwaremelsec iq-fx5u-32mt\/dsmelsec iq-fx5u-32mt\/dss firmwaremelsec iq-fx5u-32mt\/dss+66
Source: NVD CPE · 78 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

PATCHhttps://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-003_en.pdf
PATCHhttps://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-003_en.pdf
ADVISORYhttps://jvn.jp/vu/JVNVU94650413
ADVISORYhttps://www.cisa.gov/news-events/ics-advisories/icsa-23-143-03
ADVISORYhttps://jvn.jp/vu/JVNVU94650413
ADVISORYhttps://www.cisa.gov/news-events/ics-advisories/icsa-23-143-03

All References (7)

→
https://jvn.jp/vu/JVNVU94650413Third Party Advisory
→
https://www.cisa.gov/news-events/ics-advisories/icsa-23-143-03Third Party Advisory · US Government Resource
→
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-003_en.pdfPatch · Vendor Advisory
→
https://jvn.jp/vu/JVNVU94650413Third Party Advisory
→
https://www.cisa.gov/news-events/ics-advisories/icsa-23-143-03Third Party Advisory · US Government Resource
→
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-003_en.pdfPatch · Vendor Advisory
→
https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1727

Quick Facts

CVE IDCVE-2023-1424
CVSS Score8.1 / 10
SeverityHIGH
WeaknessCWE-120
CISA KEVNo
Affected1 vendor(s)
PublishedMay 24, 2023

Related CVEs (CWE-120)

CVE-2012-10035
10.0
CVE-2010-10016
10.0
CVE-1999-0046
10.0
CVE-2007-1770
10.0
CVE-2001-0554
10.0
CVE-2015-5093
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-1424 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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