CVE-2025-54496: Fuji Electric Monitouch V-SFT-6 Heap-based Buffer Overflow

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-11-04 · updated 2026-10-18
Weakness: CWE-122

Description

A maliciously crafted project file may cause a heap-based buffer overflow in Fuji Electric Monitouch V-SFT-6, which may allow the attacker to execute arbitrary code.

Affected products

FUJI ELECTRIC CO., LTD. / Hakko Electronics Co., Ltd. V-SFT: from 6.2.7.0 before 6.2.9.0 — fixed in 6.2.9.0

How to fix

Upgrade to a fixed version: FUJI ELECTRIC CO., LTD. / Hakko Electronics Co., Ltd. V-SFT 6.2.9.0. Check the vendor advisory for mitigations.

References

https://felib.fujielectric.co.jp/en/document_search?tab=software&document1%5B1%5D=M10009&document2%5B1%5D=M20104&product1%5B1%5D=P10003&product2%5B1%5D=P20023&product3%5B1%5D=P30623&product4%5B1%5D=S11133&discontinued%5B1%5D=0&count=20&sort=en_title&page=1&region=en-glb
https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2025/icsa-25-308-01.json
https://www.cisa.gov/news-events/ics-advisories/icsa-25-308-01

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