Insecure Default Initialization of Resource in Japan Total System products - CVE-2025-64781
Published: December 8, 2025
Vulnerability identifier: #VU119247
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/E:U/U:Green
CVE-ID: CVE-2025-64781
CWE-ID: CWE-1188
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Japan Total System
Affected software:
GroupSession Free edition
GroupSession byCloud
GroupSession ZION
GroupSession Free edition
GroupSession byCloud
GroupSession ZION
Detailed vulnerability description
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to initialization of a resource with an insecure default. A remote attacker can trick a victim to access a specially crafted URL and redirect them to an arbitrary website.
How to mitigate CVE-2025-64781
Install updates from vendor's website.