CVE-2025-5514

Denial-of-Service(DoS) Vulnerability in Web server function on MELSEC iQ-F Series CPU module

MEDIUM
5.3
CVSS Score
Published: August 25, 2025 at 05:55 AM UTC
Updated: June 17, 2026 at 09:48 AM UTC
75 products affected across 1 vendorMELSEC iQ-F FX5UC-96MT/DMELSEC iQ-F FX5U-64MR/ESMELSEC iQ-F FX5U-32MT/DSS

Using MELSEC iQ-F Series FX5U-32MT/ES by Mitsubishi Electric Corporation?

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

Improper Handling of Length Parameter Inconsistency vulnerability in web server function on Mitsubishi Electric Corporation MELSEC iQ-F Series CPU module allows a remote unauthenticated attacker to delay the processing of the web server function and prevent legitimate users from utilizing the web server function, by sending a specially crafted HTTP request.

Affected

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMMitsubishi
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-130

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