CVE-2026-58246 in NetWeaver Application Server for ABAP
Summary
by MITRE • 07/28/2026
SAP NetWeaver Application Server for ABAP and ABAP Platform writes sensitive session identifier information into a diagnostic trace when the trace is activated by a privileged user. An attacker with access to the resulting trace data could obtain identifiers that allow impersonation of legitimate users during their validity period. This leads to high impact on confidentiality. Integrity and availability are not impacted.
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Analysis
by VulDB Data Team • 07/28/2026
SAP NetWeaver Application Server represents a critical component in enterprise application infrastructure where ABAP and ABAP Platform applications execute. The vulnerability stems from improper handling of session identifiers within diagnostic trace files, specifically when privileged users activate tracing functionality. This flaw exists at the intersection of security configuration management and data protection practices, creating an avenue for privilege escalation attacks that directly compromise user authentication integrity.
The technical implementation flaw manifests when the system generates diagnostic traces containing sensitive session identifier information without adequate sanitization or access controls. These trace files are created with elevated privileges by authorized users and contain session tokens that can be exploited by unauthorized parties who gain access to these diagnostic artifacts. The vulnerability is classified under CWE-200 as exposure of sensitive information, specifically in the context of session management where authentication tokens are written to potentially accessible locations.
From an operational impact perspective, this vulnerability enables attackers to perform session hijacking attacks with significant consequences for system security. The compromised session identifiers remain valid for their entire lifecycle, allowing unauthorized users to impersonate legitimate system users and access protected resources without detection. This represents a high-impact confidentiality breach that can lead to data theft, unauthorized transactions, and privilege escalation within the SAP environment. The attack vector requires only access to diagnostic trace files, which may be stored in accessible locations or obtained through other means of system compromise.
The security implications extend beyond simple credential theft as this vulnerability undermines the fundamental authentication mechanisms within SAP NetWeaver environments. Attackers can leverage these session identifiers to perform actions with full user privileges, potentially leading to complete system compromise when combined with other attack vectors. This weakness aligns with ATT&CK technique T1563.002 for credentials from password stores and T1078.004 for valid accounts, as it provides attackers with legitimate session tokens that bypass normal authentication mechanisms.
Mitigation strategies should focus on immediate implementation of trace file access controls and configuration modifications to prevent sensitive data exposure. Organizations must ensure diagnostic tracing is properly restricted to authorized personnel only and implement automated scanning for sensitive information in trace files. The recommended approach includes disabling unnecessary trace generation, implementing proper file permissions on diagnostic directories, and establishing monitoring procedures for suspicious access patterns to trace files. Additionally, regular security assessments should verify that no sensitive session data is being written to accessible locations. This vulnerability highlights the importance of secure logging practices and proper separation of concerns in enterprise application security frameworks, particularly when dealing with privileged system operations that may inadvertently expose authentication tokens to unauthorized parties.