Vulnerability · Published Dec 8, 2025 · Assigned by jpcert
CVE-2025-66461
Medium 6.7
In plain English
A medium-severity security flaw in FULLBACK Manager Pro for Network (for Windows) from GS Yuasa International Ltd.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities).
Severity (CVSS 3.0)6.7Medium
Exploit odds (30 days)0.2%top 95.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| 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 |
Weakness: CWE-428 · Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H