CVE-2025-13125 identifies an authorization bypass vulnerability categorized under CWE-639 (Authorization Bypass Through User-Controlled Key) in the DijiDemi product developed by Im Park Information Technology, Electronics, Press, Publishing and Advertising, Education Ltd. Co. The vulnerability arises because the application improperly trusts user-controlled keys or identifiers, which can be manipulated by an attacker to bypass authorization checks. This means that an attacker with at least low-level privileges (as indicated by the CVSS vector requiring PR:L) can exploit this flaw to access resources or perform actions beyond their intended permissions without requiring user interaction. The vulnerability affects all versions up to 28.11.2025, with no patches currently available. The CVSS score of 4.3 reflects a medium severity, primarily impacting confidentiality (C:L) with no impact on integrity or availability, and with a network attack vector and low attack complexity. The flaw does not require user interaction, making exploitation more straightforward once privileges are obtained. Although no known exploits exist in the wild, the vulnerability poses a risk to environments where DijiDemi is deployed, especially in sectors handling sensitive or proprietary information. The root cause is the failure to properly validate or restrict user-controlled keys used in authorization logic, allowing attackers to escalate privileges or access unauthorized data.

For European organizations, the primary impact of CVE-2025-13125 is unauthorized access to sensitive information due to authorization bypass. This can lead to data leakage, exposure of confidential educational materials, proprietary publishing content, or advertising campaign data. While the vulnerability does not affect system integrity or availability, the confidentiality breach can damage organizational reputation, lead to regulatory non-compliance (e.g., GDPR), and cause financial losses. Organizations in sectors such as education, publishing, and advertising that rely on DijiDemi for content management or distribution are particularly at risk. Since exploitation requires some level of privilege, insider threats or compromised low-privilege accounts pose a significant risk vector. The lack of patches increases exposure duration, necessitating proactive mitigation. Additionally, unauthorized access could facilitate further attacks or lateral movement within networks, amplifying potential damage.

To mitigate CVE-2025-13125, organizations should implement strict validation and sanitization of all user-controlled keys or identifiers used in authorization logic within DijiDemi. Access controls should be reviewed and tightened to ensure least privilege principles are enforced, minimizing the number of users with low-level privileges that could be exploited. Monitoring and logging of authorization failures and unusual access patterns should be enhanced to detect potential exploitation attempts early. Network segmentation can limit the impact of compromised accounts. Until official patches are released, consider deploying application-layer firewalls or runtime application self-protection (RASP) solutions to detect and block suspicious requests involving manipulated keys. Conduct internal security assessments or penetration tests focusing on authorization mechanisms in DijiDemi deployments. Additionally, educate users about the risks of credential compromise and enforce strong authentication methods to reduce the likelihood of privilege escalation.