HOMEVULNERABILITIESCVE-2023-4625
MEDIUM

CVE-2023-4625

CWE-307Published: November 6, 2023· Updated: Jun 17, 2026

5.3
CVSS v3.1

Official Description

Improper Restriction of Excessive Authentication Attempts vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F/iQ-R Series CPU modules Web server function allows a remote unauthenticated attacker to prevent legitimate users from logging into the Web server function for a certain period after the attacker has attempted to log in illegally by continuously attempting unauthorized login to the Web server function. The impact of this vulnerability will persist while the attacker continues to attempt unauthorized login.

NVD Source

Technical Analysis

CVE-2023-4625 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.

CVSS v3.1 Vector Breakdown

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

Affected Vendors & Products

mitsubishielectric126 product(s)
fx5u-32mt\/es firmwarefx5u-32mt\/esfx5u-64mt\/es firmwarefx5u-64mt\/esfx5u-80mt\/es firmwarefx5u-80mt\/esfx5u-32mr\/es firmwarefx5u-32mr\/esfx5u-64mr\/es firmwarefx5u-64mr\/esfx5u-80mr\/es firmwarefx5u-80mr\/es+114
Source: NVD CPE · 126 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/JVNVU94620134
ADVISORYhttps://www.cisa.gov/news-events/ics-advisories/icsa-23-306-02
ADVISORYhttps://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-014_en.pdf
ADVISORYhttps://jvn.jp/vu/JVNVU94620134
ADVISORYhttps://www.cisa.gov/news-events/ics-advisories/icsa-23-306-02
ADVISORYhttps://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-014_en.pdf

All References (6)

→
https://jvn.jp/vu/JVNVU94620134Third Party Advisory
→
https://www.cisa.gov/news-events/ics-advisories/icsa-23-306-02Third Party Advisory · US Government Resource
→
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-014_en.pdfVendor Advisory
→
https://jvn.jp/vu/JVNVU94620134Third Party Advisory
→
https://www.cisa.gov/news-events/ics-advisories/icsa-23-306-02Third Party Advisory · US Government Resource
→
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-014_en.pdfVendor Advisory

Quick Facts

CVE IDCVE-2023-4625
CVSS Score5.3 / 10
SeverityMEDIUM
WeaknessCWE-307
CISA KEVNo
Affected1 vendor(s)
PublishedNov 6, 2023

Related CVEs (CWE-307)

CVE-2017-1197
9.8
CVE-2017-7898
9.8
CVE-2025-58587
9.8
CVE-2025-8679
9.8
CVE-2017-7915
9.8
CVE-2017-11187
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-4625 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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