CVE-2026-24312: SAP Basis Privilege Escalation Vulnerability

CVE-2026-24312 Overview

CVE-2026-24312 is a privilege escalation vulnerability in SAP Business Workflow caused by an erroneous authorization check within SAP NetWeaver Application Server ABAP (SAP_BASIS). An authenticated administrative user can bypass role restrictions by leveraging permissions granted for a less sensitive function to execute unauthorized, high-privilege actions. The flaw is tracked under CWE-862: Missing Authorization. Exploitation requires network access and user interaction, and it primarily affects data integrity while exposing limited confidential information. SAP addressed the issue in the February 2026 Security Patch Day release.

Critical Impact

An authenticated administrator can escalate privileges through SAP Business Workflow and perform high-integrity actions outside the scope of their assigned role.

Affected Products

• SAP NetWeaver SAP_BASIS versions 752, 753, 754, 755, 756
• SAP NetWeaver SAP_BASIS versions 757, 758
• SAP NetWeaver SAP_BASIS version 816

Discovery Timeline

• 2026-02-10 - CVE-2026-24312 published to NVD
• 2026-02-17 - Last updated in NVD database

Technical Details for CVE-2026-24312

Vulnerability Analysis

The vulnerability resides in the authorization handling of SAP Business Workflow, a core component delivered through SAP_BASIS. SAP Business Workflow orchestrates business processes and relies on role-based authorization objects to gate sensitive actions. The defective check fails to validate the full set of permissions required for high-privilege workflow operations. Instead, it accepts authorization granted for a separate, less sensitive function as sufficient proof of access.

An authenticated administrative user with limited workflow permissions can therefore invoke privileged workflow actions that should require stricter role assignments. The result is a vertical privilege escalation within the SAP application layer that alters business data without availability impact.

The attack vector is network-based with low complexity, but it requires existing high-privilege authentication and user interaction. This narrows the practical attacker profile to authorized administrators or attackers who have already compromised an administrative session. The flaw maps to CWE-862: Missing Authorization, as the application performs an action without correctly verifying that the actor possesses the required permissions.

Root Cause

The root cause is an incomplete authorization check inside SAP Business Workflow. The workflow runtime reuses authorization context from a lower-sensitivity function path when evaluating access to a higher-sensitivity action. Required authorization objects are not re-validated against the user's role, which violates the principle of complete mediation.

Attack Vector

An authenticated user with administrative-tier access submits a workflow request that exercises the privileged code path. Because the authorization check accepts the weaker function permission, the action executes under the elevated context. The attacker can then modify workflow data, approval states, or downstream business objects, producing high integrity impact and limited disclosure of related data.

No verified public proof-of-concept code is available for CVE-2026-24312. Refer to SAP Note #3710111 for vendor-supplied technical details.

Detection Methods for CVE-2026-24312

Indicators of Compromise

• Workflow execution events where the acting user lacks the authorization object expected for the privileged action.
• Audit log entries from transaction SM20 or SAL showing administrative users invoking workflow steps outside their normal duty profile.
• Unexpected changes to workflow approval states, agent assignments, or business object data driven by administrator accounts.

Detection Strategies

• Enable the SAP Security Audit Log and capture authorization failures and successful sensitive actions for all administrative users.
• Correlate workflow runtime events (SWI* transactions, WAPI calls) with the user's assigned roles using SUIM exports to identify role-action mismatches.
• Forward SAP audit logs into a centralized SIEM and alert on privilege boundary crossings within Business Workflow.

Monitoring Recommendations

• Monitor SAP_BASIS patch level on all NetWeaver ABAP systems and flag instances still running unpatched 752–758 or 816 stacks.
• Track usage of workflow administration transactions such as SWIA, SWI1, and SWPC by privileged users.
• Review SoD (Segregation of Duties) reports for administrators holding both low- and high-sensitivity workflow authorizations.

How to Mitigate CVE-2026-24312

Immediate Actions Required

• Apply the corrections delivered in SAP Note #3710111 on all affected SAP_BASIS releases.
• Review administrative role assignments and remove authorizations that combine low- and high-sensitivity workflow functions for the same user.
• Rotate credentials for administrative accounts that were active before patch deployment and audit their workflow activity.

Patch Information

SAP released the fix as part of the February 2026 Security Patch Day. The corrections are documented in SAP Note #3710111 and apply to SAP_BASIS 752, 753, 754, 755, 756, 757, 758, and 816. Customers should follow the standard SAP Note implementation workflow using SNOTE and validate that the kernel and ABAP component levels match the prerequisites stated in the note. Additional vendor guidance is published on the SAP Security Patch Day portal.

Workarounds

• Restrict membership of administrative roles that include SAP Business Workflow authorization objects until the patch is applied.
• Enforce strict Segregation of Duties so no single administrator holds both the low-sensitivity and high-sensitivity workflow permissions exploited by this flaw.
• Increase Security Audit Log retention and alerting for workflow administration transactions during the remediation window.

# Configuration example: enable SAP Security Audit Log filters for workflow activity
# Transaction SM19 - define a static profile capturing privileged workflow events
AUDIT_PROFILE = ZWFLOW_PRIV
CLIENT        = *
USER          = *
EVENTS:
  AU1  # Successful logon
  AUO  # Successful transaction start (filter: SWIA, SWI1, SWPC, SWO1)
  AUM  # Authorization check failed
  AUP  # RFC/CPIC logon (filter on workflow function modules)
# Activate the profile via SM19 and review with SM20 / RSAU_READ_LOG