CVE-2025-42913 is a vulnerability identified in the SAP HCM My Timesheet Fiori 2.0 application, specifically version GBX01HR5 605. The root cause of this vulnerability is a missing authorization check (CWE-862), which allows an authenticated attacker who possesses in-depth knowledge of the system to escalate privileges within the application. This escalation enables the attacker to perform actions that are normally restricted, thereby compromising the integrity of the application. The vulnerability does not impact confidentiality or availability, indicating that sensitive data exposure or denial of service conditions are not concerns here. The CVSS 3.1 base score is 3.1, categorized as low severity, with the vector indicating network attack vector (AV:N), high attack complexity (AC:H), low privileges required (PR:L), no user interaction (UI:N), unchanged scope (S:U), no confidentiality impact (C:N), low integrity impact (I:L), and no availability impact (A:N). No known exploits are currently observed in the wild, and no official patches have been linked yet. The vulnerability requires the attacker to be authenticated and have detailed system knowledge, which limits the ease of exploitation but still poses a risk to the integrity of the SAP HCM timesheet management process.

For European organizations using SAP HCM My Timesheet Fiori 2.0, this vulnerability could allow malicious insiders or compromised accounts to perform unauthorized actions within the timesheet application. Although the impact on confidentiality and availability is negligible, the integrity compromise could lead to falsified timesheet entries, unauthorized modifications of time records, or manipulation of payroll-related data. This can result in financial discrepancies, compliance violations, and potential internal fraud. Given the critical role of SAP HCM in workforce management, even low-integrity impacts can have cascading effects on HR operations and audit processes. Organizations in Europe, where strict labor laws and GDPR regulations apply, may face regulatory scrutiny if such integrity issues lead to inaccurate employee data or payroll errors. However, the requirement for authentication and high attack complexity reduces the likelihood of widespread exploitation.

To mitigate this vulnerability effectively, European organizations should: 1) Implement strict access controls and role-based permissions within SAP HCM to limit the number of users with elevated privileges or system knowledge. 2) Conduct regular audits of user activities and timesheet modifications to detect anomalous behavior indicative of privilege abuse. 3) Apply SAP security notes and patches promptly once available, as SAP typically releases updates addressing such authorization issues. 4) Enhance monitoring and alerting on the SAP Fiori applications, focusing on unusual privilege escalation attempts or unauthorized actions. 5) Provide targeted security training to administrators and users with elevated access to recognize and report suspicious activities. 6) Consider implementing multi-factor authentication (MFA) to reduce the risk of compromised credentials being used to exploit this vulnerability. 7) Review and harden the configuration of the SAP HCM My Timesheet Fiori application to ensure authorization checks are enforced consistently.