Vulnerability-Lookup

GHSA-R7HP-8XQQ-GFPR

Vulnerability from github – Published: 2025-09-19 12:30 – Updated: 2025-09-24 06:30

Details

Improper Handling of Length Parameter Inconsistency vulnerability in Mitsubishi Electric Corporation MELSEC-Q Series Q03UDVCPU, Q04UDVCPU, Q06UDVCPU, Q13UDVCPU, Q26UDVCPU, Q04UDPVCPU, Q06UDPVCPU, Q13UDPVCPU, and Q26UDPVCPU with the first 5 digits of serial No. "24082" to "27081" allows a remote attacker to cause an integer underflow by sending specially crafted packets to the affected product to stop Ethernet communication and the execution of control programs on the product, when the user authentication function is enabled. The user authentication function is enabled by default only when settings are configured by GX Works2, which complies with the Cybersecurity Law of the People's Republic of China, and is normally disabled.

Severity

6.8 (Medium)


                  
                    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2025-8531"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-130"
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    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-19T10:15:36Z",
    "severity": "MODERATE"
  },
  "details": "Improper Handling of Length Parameter Inconsistency vulnerability in Mitsubishi Electric Corporation MELSEC-Q Series Q03UDVCPU, Q04UDVCPU, Q06UDVCPU, Q13UDVCPU, Q26UDVCPU, Q04UDPVCPU, Q06UDPVCPU, Q13UDPVCPU, and Q26UDPVCPU with the first 5 digits of serial No. \"24082\" to \"27081\" allows a remote attacker to cause an integer underflow by sending specially crafted packets to the affected product to stop Ethernet communication and the execution of control programs on the product, when the user authentication function is enabled. The user authentication function is enabled by default only when settings are configured by GX Works2, which complies with the Cybersecurity Law of the People\u0027s Republic of China, and is normally disabled.",
  "id": "GHSA-r7hp-8xqq-gfpr",
  "modified": "2025-09-24T06:30:29Z",
  "published": "2025-09-19T12:30:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-8531"
    },
    {
      "type": "WEB",
      "url": "https://jvn.jp/vu/JVNVU97846038"
    },
    {
      "type": "WEB",
      "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-25-266-02"
    },
    {
      "type": "WEB",
      "url": "https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2025-013_en.pdf"
    }
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  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H",
      "type": "CVSS_V3"
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}

CVE-2025-8531 (GCVE-0-2025-8531)

Vulnerability from cvelistv5 – Published: 2025-09-19 09:30 – Updated: 2025-09-24 05:39

Summary

Severity

6.8 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-09-19 11:46 UTC

CWE

CWE-130 - Improper Handling of Length Parameter Inconsistency

Assigner

Mitsubishi CNA under the jpcert root

CNA scorecard – unranked: 8 records in the last 180 days, 10 needed details

References

3 references

URL	Tags
https://www.mitsubishielectric.com/psirt/vulnerab…	vendor-advisory
https://jvn.jp/vu/JVNVU97846038/	government-resource
https://www.cisa.gov/news-events/ics-advisories/i…	government-resource

Impacted products

9 products

Vendor	Product	Version
Mitsubishi Electric Corporation	MELSEC-Q Series Q03UDVCPU	Affected: The first 5 digits of serial No. "24082" to "27081"
Mitsubishi Electric Corporation	MELSEC-Q Series Q04UDVCPU	Affected: The first 5 digits of serial No. "24082" to "27081"
Mitsubishi Electric Corporation	MELSEC-Q Series Q06UDVCPU	Affected: The first 5 digits of serial No. "24082" to "27081"
Mitsubishi Electric Corporation	MELSEC-Q Series Q13UDVCPU	Affected: The first 5 digits of serial No. "24082" to "27081"
Mitsubishi Electric Corporation	MELSEC-Q Series Q26UDVCPU	Affected: The first 5 digits of serial No. "24082" to "27081"
Mitsubishi Electric Corporation	MELSEC-Q Series Q04UDPVCPU	Affected: The first 5 digits of serial No. "24082" to "27081"
Mitsubishi Electric Corporation	MELSEC-Q Series Q06UDPVCPU	Affected: The first 5 digits of serial No. "24082" to "27081"
Mitsubishi Electric Corporation	MELSEC-Q Series Q13UDPVCPU	Affected: The first 5 digits of serial No. "24082" to "27081"
Mitsubishi Electric Corporation	MELSEC-Q Series Q26UDPVCPU	Affected: The first 5 digits of serial No. "24082" to "27081"

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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