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Affected Environment
SAP Cloud SDK for Python, NetWeaver, S/4HANA, Manufacturing Integration and Intelligence, Commerce Cloud, ABAP Platform, and Cloud Connector.
Threat Overview
Twenty-two CVEs, including CVE-2026-89111 (CVSS 10) and two CVSS 9.9 flaws in NetWeaver Visual Composer and S/4HANA.
Exposure Timeline
Security patches released October 2026; report issued 13 October 2026.
Attack Surface
Multi-tenant BTP applications, enterprise portals, SAP GUI for HTML, SAPUI5, and VS Code Yeoman UI developer extensions.
Technical Root Cause
OAuth2 SSRF, broken access control, ABAP code injection, missing authorization checks, SQL injection, memory corruption, and XSS.
Exploitation Pathway
Attacker controls the tenant_subdomain parameter to steal OAuth2 credentials, or authenticated users inject ABAP code or invoke privileged operations.
Operational Impact
Credential theft, remote system compromise, ABAP code execution, data exposure, and availability loss on business critical SAP systems.
Strategic Impact
ERP compromise threatens financial, manufacturing, and supply chain operations; large entities rated Critical.
Required Mitigation
Apply SAP's October 2026 security notes, prioritising CVE-2026-89111, CVE-2026-89110, CVE-2026-89107, and CVE-2026-89108.
Incident Response Guidance
Rotate OAuth2 client credentials, review ABAP and portal logs for unusual rule or remote system activity, and verify patch status.
References
SAP Security Notes.
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