High 8.4Published Dec 8, 2025

CVE-2025-66461FULLBACK Manager Pro provided by GS Yuasa International Ltd.

Updated under an hour ago (Oct 28, 2026, 6:10 AM ET)

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It affects GS Yuasa International Ltd. FULLBACK Manager Pro (for Windows) and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for GS Yuasa International Ltd. FULLBACK Manager Pro (for Windows)

Exploited in the last 30 days

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.

CVSS: 8.4 HIGH (v4.0, CNA)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
Weakness (CWE): CWE-428
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: jpcert
NVD analysis: Deferred
Record last updated: Dec 8, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

GS Yuasa International Ltd. FULLBACK Manager Pro (for Windows) gs_yuasa_international:fullback_manager_pro_for_windows (from the name)	4.00 and earlier	CNA record
GS Yuasa International Ltd. FULLBACK Manager Pro for Network (for Windows) gs_yuasa_international:fullback_manager_pro_for_network_for_windows (from the name)	3.00 and earlier	CNA record

References

References

https://ps.gs-yuasa.com/technicalinfo/pdf/failure/FMP_info20251201_TEX48214-993.pdf
https://jvn.jp/en/jp/JVN59242986/

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.