Vulnerability Summary
SAP Landscape Transformation allows an attacker with admin privileges to exploit a vulnerability in the function module exposed via RFC. This flaw enables the injection of arbitrary ABAP code/OS commands into the system, bypassing essential authorization checks. This vulnerability effectively functions as a backdoor, creating the risk of full system compromise, undermining the confidentiality, integrity and availability of the system.
CVSS v3.0 Assessment
Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Technical Details
Code Injection via RFC-enabled Function Module in Landscape Transformation Analysis
SAP Landscape Transformation is a critical component used during system migrations, consolidations, upgrades, and landscape transformations. The vulnerability exists in an RFC-enabled function module within the Landscape Transformation Analysis (LT Analysis) component that lacks proper input validation. An attacker with administrative privileges can exploit this to:
- Inject arbitrary ABAP code into transformation processes
- Execute operating system commands on transformation servers
- Bypass all authorization checks and security mechanisms
- Manipulate transformation rules, mappings, and data conversions
- Corrupt data being replicated during landscape transformations
- Create backdoors in both source and target systems
- Access sensitive business data being migrated
- Compromise the integrity of entire transformation projects
Business Impact
Organizations currently executing or planning SAP landscape transformations should treat this vulnerability with the highest priority. Exploitation during transformation can have catastrophic long-term impacts on data integrity, system security, and business operations across the entire SAP landscape.
Potential business consequences:
- Corruption of business-critical data during migration
- Compromise of financial, HR, and operational data being transformed
- Introduction of backdoors that persist across system landscapes
- Regulatory compliance violations (GDPR, SOX, etc.)
- Project delays and potential need to rollback transformations
- Need for comprehensive forensic investigation of transformation activities
- Loss of trust in transformation project outcomes
Affected Software Components
Solution
This issue is fixed by removing the code causing the vulnerability. The vulnerable function module has been eliminated, preventing any possibility of code injection or OS command execution through this attack vector in the Landscape Transformation infrastructure.
Implement the Correction Instructions or Support Packages referenced by SAP Security Note #3697979. Please refer to FAQ document 3698186 for additional implementation guidance and transformation project considerations.
Workaround
There is no workaround available for this security note. Organizations must apply the security patch to remediate this critical vulnerability.
For organizations with active transformation projects, implement these compensating controls until patching is complete:
- Emergency Patching: Schedule patch deployment during the next available maintenance window
- Access Restriction: Restrict network access to Landscape Transformation servers to absolute minimum
- Privilege Audit: Immediately review and minimize administrative privileges for transformation infrastructure
- Enhanced Monitoring: Implement real-time monitoring of all RFC calls and administrative activities
- Data Validation: Implement additional integrity checks on transformed/replicated data
- Change Control: Require multi-person approval for all transformation configuration changes
- Activity Logging: Enable comprehensive audit logging and secure log forwarding
- Forensic Readiness: Document all transformation activities for potential forensic investigation
Post-Patch Validation
After applying the security patch, organizations with recent transformation activities should:
- Review transformation audit logs for any suspicious activities
- Validate data integrity of all recently transformed/replicated data
- Verify transformation rules and mappings have not been tampered with
- Test transformation processes in non-production environment
- Conduct security assessment of both source and target systems
- Review user accounts and authorizations in transformation landscape
- Document all activities during the vulnerability exposure period
Technical Implementation Details
The security patch removes the vulnerable code from the following ABAP repository object in the Landscape Transformation infrastructure:
Note that CVE-2026-0498 (SAP Note #3694242) affects the same function group CNVC_JSTAT and
includes this function module along with additional ones. Organizations should ensure both security notes are applied
to fully remediate all code injection vulnerabilities in the data transformation infrastructure.
The CNVCF_JSTAT_UP function module contained code that allowed arbitrary ABAP code execution and OS command
injection through RFC interfaces in the context of landscape transformation operations. The patch removes these vulnerable
code sections while maintaining the legitimate transformation status update functionality through secure implementations.
Disclosure Date: January 13, 2026 SAP Security Patch Day
For more information, visit SAP Security Notes
