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Fuji Electric Monitouch V-SFT-6 Security Risks

Source Decision Insights Threat Desk Published November 6, 2025 Companies 2
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2 companies named across 6 categories, one of 12 articles referencing Trend Micro. Previous coverage: Delta Electronics issues CNCSoft-G2 advisory (Nov 2025).

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1. EXECUTIVE SUMMARY

  • Common Vulnerability Scoring System (CVSS) v4 8.4
  • ATTENTION: Low attack complexity
  • Vendor: Fuji Electric
  • Equipment: Monitouch V-SFT-6
  • Vulnerabilities: Heap-based Buffer Overflow, Stack-based Buffer Overflow

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could crash the accessed device; a buffer overflow condition may allow remote code execution.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of Fuji Electric Monitouch V-SFT-6 Human-Machine Interface (HMI) configuration software Agent Runtime Environment (ARE) affected:

  • Fuji Electric Monitouch V-SFT-6: Version 6.2.7.0

3.2 VULNERABILITY OVERVIEW

3.2.1 Heap-based Buffer Overflow CWE-122

A maliciously crafted project file may cause a heap-based buffer overflow, which may allow the attacker to execute arbitrary code.

CVE-2025-54496 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.8 HAS been calculated; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

A CVSS v4 score HAS also been calculated for CVE-2025-54496. A base score of 8.4 HAS been calculated; the CVSS vector string is (CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).

3.2.2 Stack-based Buffer Overflow CWE-121

Fuji Electric Monitouch V-SFT-6 is vulnerable to a stack-based buffer overflow while processing a specially crafted project file, which may allow an attacker to execute arbitrary code.

CVE-2025-54526 HAS been assigned to this vulnerability. A CVSS v3.1 base score of 7.8 HAS been calculated; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

A CVSS v4 score HAS also been calculated for CVE-2025-54526. A base score of 8.4 HAS been calculated; the CVSS vector string is (CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).

3.3 BACKGROUND

  • CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
  • COUNTRIES/AREAS DEPLOYED: Worldwide
  • COMPANY HEADQUARTERS LOCATION: Japan

3.4 RESEARCHER

Rocco Calvi with TecSecurity working with Trend Micro Zero Day Initiative reported these vulnerabilities to CISA.

4. MITIGATIONS

Fuji Electric HAS addressed these vulnerabilities in their October release (V-SFT V6.2.8.0). They recommend users update to V6.2.9.0 or newer.

CISA recommends users take the following measures to protect themselves from social engineering attacks:

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the Industrial Control Systems (ICS) webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices ARE available for reading and download, including Improving ICS Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices ARE publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

No known public exploitation specifically targeting these vulnerabilities HAS been reported to CISA at this time. These vulnerabilities ARE not exploitable remotely.

5. UPDATE HISTORY

  • November 4, 2025: Initial Publication

Blog post, originally published by CISA at cisa.gov.

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