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PatchSiren cyber security CVE debrief

CVE-2025-53524 Fuji Electric CVE debrief

A high-severity out-of-bounds write vulnerability in Fuji Electric Monitouch V-SFT-6 allows arbitrary code execution when processing malicious project files. The vulnerability was disclosed by CISA on November 4, 2025, with an update on December 16, 2025 that added the CVE identifier. Fuji Electric has released patched versions V6.2.8.0 and later, with V6.2.9.0 recommended as the target update.

Vendor
Fuji Electric
Product
Monitouch V-SFT-6
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2025-11-04
Original CVE updated
2025-12-16
Advisory published
2025-11-04
Advisory updated
2025-12-16

Who should care

Organizations operating Fuji Electric Monitouch HMI systems in manufacturing, energy, water treatment, and other industrial environments. OT security teams, plant engineers, and HMI operators responsible for maintaining safe and reliable industrial control system operations.

Technical summary

The vulnerability exists in Fuji Electric Monitouch V-SFT-6 HMI configuration software. An out-of-bounds write occurs during processing of specially crafted project files, which can be leveraged to achieve arbitrary code execution. The attack vector requires local access with user interaction (opening a malicious project file). The CVSS 3.1 vector AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H indicates high impacts to confidentiality, integrity, and availability when exploited.

Defensive priority

HIGH

Recommended defensive actions

  • Update Fuji Electric Monitouch V-SFT-6 to version V6.2.9.0 or newer per vendor guidance
  • Restrict access to project file directories to authorized personnel only
  • Implement application whitelisting to prevent execution of unauthorized binaries
  • Train operators to recognize and avoid social engineering attacks targeting HMI systems
  • Apply defense-in-depth strategies for industrial control system environments per CISA guidance

Evidence notes

CISA ICS advisory ICSA-25-308-01 documents this vulnerability with CVSS 3.1 score 7.8 (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). The advisory was initially published November 4, 2025 and updated December 16, 2025 to add CVE-2025-53524. Fuji Electric remediation guidance specifies V-SFT V6.2.8.0 as the initial fix, with V6.2.9.0 or newer recommended.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-53524 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-53524

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2025-53524 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-53524

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2025/icsa-25-308-01.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-25-308-01

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/resources-tools/resources/ics-recommended-practices

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/topics/industrial-control-systems

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-alerts/ics-alert-10-301-01

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/news/targeted-cyber-intrusion-detection-and-mitigation-strategies-update-b

    Reference

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.