HOMEVULNERABILITIESCVE-2023-6374
HIGH

CVE-2023-6374

CWE-294Published: January 30, 2024· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

Authentication Bypass by Capture-replay vulnerability in Mitsubishi Electric Corporation MELSEC WS Series WS0-GETH00200 all serial numbers allows a remote unauthenticated attacker to bypass authentication by capture-replay attack and illegally login to the affected module. As a result, the remote attacker who has logged in illegally may be able to disclose or tamper with the programs and parameters in the modules.

NVD Source

Technical Analysis

CVE-2023-6374 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 full integrity compromise (data manipulation), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

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

Affected Vendors & Products

mitsubishielectric2 product(s)
melsec ws0-geth00200 firmwaremelsec ws0-geth00200
Source: NVD CPE · 2 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/JVNVU99497477
ADVISORYhttps://www.cisa.gov/news-events/ics-advisories/icsa-24-030-03
ADVISORYhttps://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-019_en.pdf
ADVISORYhttps://jvn.jp/vu/JVNVU99497477
ADVISORYhttps://www.cisa.gov/news-events/ics-advisories/icsa-24-030-03
ADVISORYhttps://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-019_en.pdf

All References (6)

→
https://jvn.jp/vu/JVNVU99497477Third Party Advisory
→
https://www.cisa.gov/news-events/ics-advisories/icsa-24-030-03Third Party Advisory · US Government Resource
→
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-019_en.pdfVendor Advisory
→
https://jvn.jp/vu/JVNVU99497477Third Party Advisory
→
https://www.cisa.gov/news-events/ics-advisories/icsa-24-030-03Third Party Advisory · US Government Resource
→
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-019_en.pdfVendor Advisory

Quick Facts

CVE IDCVE-2023-6374
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-294
CISA KEVNo
Affected1 vendor(s)
PublishedJan 30, 2024

Related CVEs (CWE-294)

CVE-2025-49752
10.0
CVE-2023-49231
9.8
CVE-2026-28564
9.8
CVE-2020-35551
9.8
CVE-2023-0014
9.8
CVE-2022-44457
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-6374 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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