5.3
MEDIUM CVSS 3.1
CVE-2025-5514
Mitsubishi Electric Corporation MELSEC iQ-F Series CPU Module HTTP Request Delay Denial of Service Vulnerability
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.

INFO

Published Date :

Aug. 25, 2025, 6:15 a.m.

Last Modified :

Aug. 25, 2025, 8:24 p.m.

Remotely Exploit :

Yes !
Affected Products

The following products are affected by CVE-2025-5514 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Mitsubishielectric melsec_iq-fx5u-32mt\/es_firmware
2 Mitsubishielectric melsec_iq-fx5u-32mt\/ds_firmware
3 Mitsubishielectric melsec_iq-fx5u-32mt\/ess_firmware
4 Mitsubishielectric melsec_iq-fx5u-32mt\/dss_firmware
5 Mitsubishielectric melsec_iq-fx5u-32mr\/es_firmware
6 Mitsubishielectric melsec_iq-fx5u-32mr\/ds_firmware
7 Mitsubishielectric melsec_iq-fx5u-64mt\/es_firmware
8 Mitsubishielectric melsec_iq-fx5u-64mt\/ds_firmware
9 Mitsubishielectric melsec_iq-fx5u-64mt\/ess_firmware
10 Mitsubishielectric melsec_iq-fx5u-64mt\/dss_firmware
11 Mitsubishielectric melsec_iq-fx5u-64mr\/es_firmware
12 Mitsubishielectric melsec_iq-fx5u-64mr\/ds_firmware
13 Mitsubishielectric melsec_iq-fx5u-80mt\/es_firmware
14 Mitsubishielectric melsec_iq-fx5u-80mt\/ds_firmware
15 Mitsubishielectric melsec_iq-fx5u-80mt\/ess_firmware
16 Mitsubishielectric melsec_iq-fx5u-80mt\/dss_firmware
17 Mitsubishielectric melsec_iq-fx5u-80mr\/es_firmware
18 Mitsubishielectric melsec_iq-fx5u-80mr\/ds_firmware
19 Mitsubishielectric melsec_iq-fx5uc-32mt\/ds-ts_firmware
20 Mitsubishielectric melsec_iq-fx5uc-32mt\/dss-ts_firmware
21 Mitsubishielectric melsec_iq-fx5uc-32mr\/ds-ts_firmware
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 MEDIUM [email protected]
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-5514.

URL Resource
https://jvn.jp/vu/JVNVU90316328/
https://www.cisa.gov/news-events/ics-advisories/icsa-25-233-01
https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2025-010_en.pdf
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-5514 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-5514 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-5514 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2025-5514 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • New CVE Received by [email protected]

    Aug. 25, 2025

    Action Type Old Value New Value
    Added 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.
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
    Added CWE CWE-130
    Added Reference https://jvn.jp/vu/JVNVU90316328/
    Added Reference https://www.cisa.gov/news-events/ics-advisories/icsa-25-233-01
    Added Reference https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2025-010_en.pdf
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 5.3
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact