CVE-2025-66461

Severity: high (CVSS 8.4 v4.0)
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: 2025-12-08 · updated 2026-10-07
Weakness: CWE-428

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 Network (for Windows): through 3.00
GS Yuasa International Ltd. FULLBACK Manager Pro (for Windows): through 4.00

References

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

Get alerted when CVE-2025-66461 or the next vulnerability affects your stack