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Vulnerabilities

Vulnerability · CVE-2025-66461

FULLBACK Manager Pro provided by GS Yuasa International Ltd.

Published Dec 8, 2025 · catalog updated Dec 8, 2025 · GS Yuasa International Ltd. FULLBACK Manager Pro (for Windows)

Last checked Nov 3, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-66461. EPSS is 0.15%. Act only if a listed version of GS Yuasa International Ltd. FULLBACK Manager Pro (for Windows) is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.4
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.15%
Remediation
Vendor / distro source
Affected products
vendor GS Yuasa International Ltd. FULLBACK Manager Pro (for Windows) 4.00 and earlier

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor GS Yuasa International Ltd. FULLBACK Manager Pro (for Windows) 4.00 and earlier4.00 and earlier

How to fix CVE-2025-66461

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-66461. EPSS is 0.15%. Act only if a listed version of GS Yuasa International Ltd. FULLBACK Manager Pro (for Windows) is installed.

Which versions are affected?

Compare what you have installed with GS Yuasa International Ltd. FULLBACK Manager Pro (for Windows) 4.00 and earlier 4.00 and earlier. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.15%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Windows security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Dec 8, 2025 · EUVD

    Detected

    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.

  2. Dec 8, 2025 · EUVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2025-66461

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-66461

    30-day exploitation probability 0.15%

    first.org
  • EUVDVulnerability recordEUVD-2025-201699

    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.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 3, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 3, 2026
  • CVE.orgOct 28, 2026
  • EUVDOct 27, 2026