CVE-2026-0484 is a vulnerability identified in SAP NetWeaver Application Server ABAP and SAP S/4HANA platforms, specifically affecting multiple SAP_BASIS component versions ranging from 700 to 816. The root cause is a missing authorization check that allows an authenticated attacker with limited privileges to access a particular transaction code and modify text data within the system. This vulnerability is categorized under CWE-601 (URL Redirection to Untrusted Site), indicating that the flaw involves improper handling of URL redirection mechanisms, potentially enabling attackers to redirect users or processes to untrusted sites or manipulate internal data flows. However, in this case, the primary impact is on the integrity of the application data rather than confidentiality or availability. The attacker does not require user interaction but must have some level of authenticated access (PR:L in CVSS), which lowers the barrier compared to requiring administrative privileges but still restricts exploitation to insiders or compromised accounts. The vulnerability does not affect confidentiality or availability, meaning sensitive data leakage or denial of service is not a concern here, but unauthorized modification of text data could disrupt business processes, reporting, or compliance. No known exploits have been reported in the wild as of the publication date, but the broad range of affected SAP_BASIS versions and the critical role of SAP systems in enterprise environments make this a significant concern. The CVSS v3.1 score of 6.5 reflects a medium severity, balancing the ease of exploitation with the impact scope. SAP customers should monitor for official patches and advisories and review access controls around the affected transaction codes.

The primary impact of CVE-2026-0484 is on the integrity of SAP application data, allowing an authenticated attacker to modify text data within the system. For European organizations, this could lead to unauthorized changes in critical business information such as financial records, supply chain data, or operational parameters, potentially causing incorrect reporting, compliance violations, or operational disruptions. Since SAP systems are widely used across Europe in sectors like manufacturing, finance, energy, and public administration, the integrity compromise could have cascading effects on business decisions and regulatory adherence. Although confidentiality and availability are not directly affected, the trustworthiness of data is critical in enterprise environments, and manipulation could facilitate fraud, sabotage, or data corruption. The requirement for authenticated access limits the risk to insiders or attackers who have already compromised user credentials, emphasizing the importance of strong identity and access management. The absence of known exploits in the wild reduces immediate risk but does not eliminate the threat, especially as attackers may develop exploits over time. Organizations relying heavily on SAP S/4HANA and NetWeaver platforms should consider this vulnerability a significant risk to data integrity and operational reliability.

1. Apply SAP security patches promptly once they are released for the affected SAP_BASIS versions to address the missing authorization check. 2. Conduct a thorough review and tighten access controls on transaction codes related to text data modification, ensuring only authorized personnel have access. 3. Implement robust authentication mechanisms, including multi-factor authentication (MFA), to reduce the risk of credential compromise. 4. Monitor and audit SAP system logs for unusual access patterns or unauthorized transaction code usage, focusing on changes to text data. 5. Use SAP’s security notes and tools to identify and remediate configuration weaknesses that could facilitate exploitation. 6. Educate SAP administrators and users about the risks of this vulnerability and the importance of adhering to least privilege principles. 7. Segment SAP environments and restrict network access to minimize exposure of SAP systems to untrusted networks. 8. Employ anomaly detection systems to identify potential integrity violations or suspicious modifications in SAP data. These steps go beyond generic advice by focusing on transaction code access control, monitoring, and SAP-specific security practices.