CVE-2026-76962 in S4HANA
Summary
by MITRE • 09/08/2026
SAP S/4HANA (Manage Bank Chains app) does not perform sufficient authorization checks within certain affected functionality. An attacker with low privileges could send specially crafted requests to delete specific entries that should not be accessible to them. This results in a low impact on availability. There is no impact on confidentiality and integrity.
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Analysis
by VulDB Data Team • 09/08/2026
The vulnerability identified in SAP S/4HANA, specifically within the Manage Bank Chains application component, represents a critical failure in access control mechanisms known as broken object level authorization or insufficient privilege separation. This flaw arises from an architectural oversight where the backend logic fails to validate whether the authenticated user possesses the necessary permissions to perform specific data manipulation operations on targeted objects. In enterprise resource planning systems like SAP S/4HANA, granular role-based access control is essential for maintaining operational integrity across complex financial workflows involving bank chains and intercompany transactions. The absence of rigorous authorization checks at the point of execution allows users with low-level privileges to bypass intended restrictions and interact with data structures reserved for higher-privileged administrators or specialized functional roles.
From a technical perspective, this vulnerability enables an attacker who has obtained valid credentials for a standard user account to send specially crafted HTTP requests that target specific database entries associated with bank chain configurations. Because the application does not adequately verify the requester's authorization level against the sensitivity of the requested action, these maliciously constructed payloads are processed successfully by the server. The core technical deficiency lies in the lack of object-level security checks during the delete operation, meaning the system trusts the client-side input or session context without cross-referencing it with the user’s assigned roles and authorizations in the central identity management framework. This type of flaw is commonly categorized under CWE-269 Improper Privilege Management and CWE-862 Missing Authorization, reflecting a fundamental gap in enforcing least privilege principles within the application logic.
The operational impact of this vulnerability is primarily confined to availability rather than confidentiality or integrity, as explicitly noted in the initial assessment. By allowing unauthorized deletion of specific entries related to bank chains, an attacker can disrupt ongoing financial processes that rely on these configurations for routing payments, managing liquidity pools, or executing intercompany settlements. While the data itself may not be exfiltrated or altered maliciously by changing its content, the removal of critical configuration records renders dependent services inoperable until they are restored from backups or reconfigured manually. This leads to service degradation and potential downtime for financial operations that depend on accurate bank chain definitions, thereby affecting business continuity without compromising the secrecy or accuracy of stored data values directly through modification.
This scenario aligns with specific tactics within the MITRE ATT&CK framework, particularly T1498 Network Denial of Service which involves impairing availability by disrupting access to resources, and potentially T1078 Valid Accounts if the attacker leverages compromised low-privilege credentials to execute these actions. The ability to delete configuration entries effectively removes essential components required for normal system function, creating a denial-of-service condition specific to those affected modules. Although the impact is rated as low due to the limited scope of availability disruption and lack of data breach implications, it still poses a risk to operational stability in environments where bank chain configurations are tightly coupled with automated payment processing workflows.
Mitigation strategies for this vulnerability require immediate application of vendor-provided patches that address the authorization logic within the Manage Bank Chains app. Administrators should ensure that all systems running affected versions are updated to include fixes that enforce strict object-level permission checks before executing delete operations. In addition to patching, organizations should review their role-based access control policies to ensure that users with low privileges do not have unnecessary write or delete permissions on sensitive configuration tables. Implementing additional monitoring for unusual deletion patterns in audit logs can also help detect potential exploitation attempts early. Furthermore, adopting a defense-in-depth approach by validating user sessions and request contexts at multiple layers of the application stack will reduce the risk surface associated with such authorization bypasses.