CVE-2025-42913 is a vulnerability identified in the SAP HCM My Timesheet Fiori 2.0 application, specifically version GBX01HR5 605. The root cause is a missing authorization check (CWE-862) that allows an authenticated attacker with detailed system knowledge to escalate privileges within the application. This escalation enables the attacker to perform restricted activities that should normally be inaccessible. The vulnerability impacts the integrity of the application by permitting unauthorized modifications or actions but does not affect confidentiality or availability. The CVSS v3.1 base score is 3.1, indicating a low severity level. The attack vector is network-based (AV:N), requiring low privileges (PR:L) and high attack complexity (AC:H), with no user interaction needed (UI:N). The scope remains unchanged (S:U). No known exploits are currently reported in the wild, and no patches have been linked yet. This vulnerability is significant in environments where SAP HCM My Timesheet Fiori 2.0 is deployed, as it could allow malicious insiders or compromised users to perform unauthorized operations, potentially leading to data integrity issues or unauthorized process manipulations within human capital management workflows.

For European organizations using SAP HCM My Timesheet Fiori 2.0, this vulnerability poses a risk primarily to the integrity of HR-related data and processes. Unauthorized privilege escalation could allow attackers to manipulate timesheet data, potentially leading to payroll errors, fraudulent time reporting, or unauthorized access to restricted HR functions. While confidentiality and availability are not impacted, the integrity compromise could undermine trust in HR systems and cause operational disruptions or compliance issues, especially under strict European data governance frameworks such as GDPR. Organizations with complex SAP HCM deployments or those relying heavily on automated HR workflows are at higher risk of operational impact. The requirement for authenticated access and in-depth system knowledge somewhat limits the threat to insider threats or attackers who have already gained some foothold within the network.

To mitigate this vulnerability effectively, European organizations should: 1) Apply any SAP security patches or updates as soon as they become available for the affected SAP HCM My Timesheet Fiori 2.0 version. 2) Conduct a thorough review of user roles and permissions within the SAP HCM environment to ensure the principle of least privilege is enforced, minimizing the number of users with elevated access. 3) Implement enhanced monitoring and logging of privileged actions within the SAP HCM application to detect unusual or unauthorized activities promptly. 4) Restrict access to the SAP HCM My Timesheet Fiori 2.0 application to trusted networks and users, possibly leveraging network segmentation and VPNs. 5) Provide targeted security awareness training to HR and IT staff about the risks of privilege escalation and the importance of safeguarding credentials. 6) Consider deploying application-level access control mechanisms or compensating controls such as SAP’s Security Audit Log and SAP Enterprise Threat Detection to identify and respond to suspicious privilege escalations. 7) Regularly audit SAP system configurations and authorization objects related to the Fiori application to detect and remediate missing or misconfigured authorization checks.