CVE-2026-24309 Overview
A missing authorization check vulnerability exists in SAP NetWeaver Application Server for ABAP that allows an authenticated attacker to execute specific ABAP function modules to read, modify, or insert entries into the database configuration table of the ABAP system. This unauthorized content change could lead to reduced system performance or service interruptions. The vulnerability is classified as CWE-862 (Missing Authorization).
Critical Impact
Authenticated attackers can manipulate database configuration tables in SAP NetWeaver ABAP systems, potentially causing system performance degradation and service interruptions.
Affected Products
- SAP NetWeaver Application Server for ABAP
Discovery Timeline
- 2026-03-10 - CVE-2026-24309 published to NVD
- 2026-03-11 - Last updated in NVD database
Technical Details for CVE-2026-24309
Vulnerability Analysis
This vulnerability stems from a missing authorization check (CWE-862) in SAP NetWeaver Application Server for ABAP. The flaw allows authenticated users to bypass intended access controls and execute specific ABAP function modules without proper authorization verification. Once exploited, an attacker can read, modify, or insert entries into the database configuration table of the ABAP system.
The attack is network-accessible and requires low complexity to exploit, though it does require valid authentication credentials. The changed scope indicates that the vulnerability can affect resources beyond the vulnerable component itself, potentially impacting other connected SAP systems or services.
Root Cause
The root cause of this vulnerability is a missing authorization check within specific ABAP function modules. When these function modules are invoked, the system fails to verify whether the authenticated user has the appropriate permissions to perform operations on the database configuration table. This authorization bypass allows users with minimal privileges to perform actions that should be restricted to system administrators.
Attack Vector
The attack vector is network-based and can be exploited by any authenticated user with access to the SAP NetWeaver Application Server for ABAP environment. An attacker would need to:
- Authenticate to the SAP NetWeaver Application Server for ABAP
- Identify and invoke the vulnerable ABAP function module
- Execute unauthorized read, modify, or insert operations on the database configuration table
- Manipulate system configuration settings to degrade performance or cause service interruptions
The vulnerability does not require user interaction and can be exploited with low attack complexity once authentication is established.
Detection Methods for CVE-2026-24309
Indicators of Compromise
- Unexpected modifications to database configuration tables in the ABAP system
- Unusual function module calls from user accounts with limited privileges
- Anomalous entries or changes in the system configuration logs
- Performance degradation or service interruptions without clear root cause
Detection Strategies
- Monitor SAP Security Audit Logs (SM21) for unauthorized function module executions
- Implement real-time monitoring of database configuration table changes
- Review user authorization profiles for excessive or inappropriate permissions
- Enable and review transaction logging for sensitive ABAP function modules
Monitoring Recommendations
- Configure SAP Solution Manager for continuous security monitoring
- Set up alerts for configuration changes in critical system tables
- Regularly audit user authorizations using SAP GRC Access Control
- Monitor network traffic to SAP systems for unusual patterns
How to Mitigate CVE-2026-24309
Immediate Actions Required
- Apply the security patch referenced in SAP Note #3703856
- Review and restrict user authorizations for sensitive ABAP function modules
- Enable comprehensive audit logging for database configuration changes
- Monitor systems for signs of exploitation until patches are applied
Patch Information
SAP has released a security update to address this vulnerability. Organizations should consult SAP Note #3703856 for detailed patch information and installation instructions. The patch is also referenced in the SAP Security Patch Day Update.
Administrators should prioritize applying this patch to all affected SAP NetWeaver Application Server for ABAP installations. The patch implements proper authorization checks for the affected ABAP function modules.
Workarounds
- Restrict access to the vulnerable ABAP function modules using authorization objects
- Implement additional authorization checks at the application layer
- Limit network access to SAP systems to trusted users and networks only
- Monitor and audit all function module executions until the patch can be applied
# SAP authorization profile review command (example)
# Review user authorizations for sensitive function modules
# Transaction: SU01 - User Maintenance
# Transaction: SUIM - User Information System for authorization analysis
# Transaction: ST01 - System Trace for monitoring authorization checks
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
