# CVE-2025-66461

## Summary

- **CVE ID:** CVE-2025-66461
- **Severity:** HIGH
- **CVSS Score:** 8.4 (CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N)
- **CWE:** CWE-428
- **Published:** Dec 8, 2025
- **Last Modified:** Mar 13, 2026

## Description

FULLBACK Manager Pro provided by GS Yuasa International Ltd. registers  two Windows services with unquoted file paths. A user may execute arbitrary code with SYSTEM privilege if he/she has the write permission on the path to the directory where the affected product is installed.

## Affected Products

- GS Yuasa International Ltd. — FULLBACK Manager Pro (for Windows) (4.00 and earlier)
- GS Yuasa International Ltd. — FULLBACK Manager Pro for Network (for Windows) (3.00 and earlier)

## References

- [CNA](https://ps.gs-yuasa.com/technicalinfo/pdf/failure/FMP_info20251201_TEX48214-993.pdf)
- [CNA](https://jvn.jp/en/jp/JVN59242986/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.15%
- **EPSS Percentile:** 4.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._