CVE-2025-13768 is an authentication bypass vulnerability classified under CWE-639 (Authorization Bypass Through User-Controlled Key) affecting the WebITR product developed by Uniong. The vulnerability allows an attacker who has already authenticated with a valid user ID to manipulate a specific parameter within the application to assume the identity of any other user without proper authorization checks. This flaw arises because the application fails to adequately validate or restrict user-controlled keys used in authorization logic, enabling privilege escalation. The attack vector is network-based (AV:N), with low attack complexity (AC:L), requiring partial authentication (PR:L) but no user interaction (UI:N). The vulnerability impacts confidentiality, integrity, and availability at a high level (VC:H, VI:H, VA:H), indicating that an attacker can access sensitive information, modify data, and disrupt services. The scope is unchanged (S: N), meaning the impact is confined to the vulnerable component. No patches are currently available, and no exploits have been reported in the wild, but the high CVSS score of 7.7 reflects the serious risk posed by this vulnerability. The vulnerability was published on November 28, 2025, and assigned by TW-CERT. Organizations using WebITR should prioritize mitigation efforts to prevent unauthorized access and potential data breaches.

For European organizations, this vulnerability poses a significant risk to the confidentiality and integrity of sensitive data managed via WebITR. Unauthorized access to user accounts can lead to data exfiltration, unauthorized transactions, and potential disruption of business operations. Given that WebITR is likely used in enterprise or critical infrastructure environments, exploitation could undermine trust in digital services and cause regulatory compliance issues, especially under GDPR. The requirement for partial authentication means insider threats or compromised credentials could be leveraged to escalate privileges, increasing the attack surface. The absence of known exploits currently provides a window for proactive defense, but the high severity demands urgent attention. The impact extends to operational continuity if attackers disrupt services or manipulate system configurations. European organizations with complex user hierarchies and sensitive workflows are particularly vulnerable to the consequences of such an authorization bypass.

1. Implement strict access control policies to minimize the number of users with authenticated access, reducing the risk of credential misuse. 2. Monitor and audit login activities for unusual patterns, such as sudden changes in user identity or access from unexpected IP addresses. 3. Employ multi-factor authentication (MFA) to strengthen authentication mechanisms and limit the risk of credential compromise. 4. Restrict parameter manipulation by validating and sanitizing all user-controlled inputs rigorously within WebITR. 5. Segregate duties and enforce least privilege principles to limit the impact of any single compromised account. 6. Engage with Uniong for timely updates and patches addressing this vulnerability and apply them immediately upon release. 7. Conduct penetration testing and code reviews focusing on authorization logic to detect similar flaws. 8. Use Web Application Firewalls (WAFs) to detect and block suspicious parameter tampering attempts. 9. Educate users about the risks of credential sharing and phishing attacks that could lead to initial authentication compromise.