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VulnerabilitiesNov 10, 2026

SAP patches ICM2SHELL and PROXYGATE maximum severity flaws

SAP patches four maximum-severity flaws in NetWeaver, Web Dispatcher, and Gateway software.

SAP has released security updates addressing 35 vulnerabilities, including four critical issues with a CVSS score of 10/10. These flaws affect NetWeaver, SAP Gateway, and SAP Web Dispatcher, and can be exploited by unauthenticated attackers for remote code execution and full system compromise. Cybersecurity firm Onapsis identified and reported three of these vulnerabilities, tracking two as ICM2SHELL and one as PROXYGATE.

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The lesson from this incident

Full lesson

SAP's NetWeaver, Gateway, and Web Dispatcher components contained four CVSS 10.0 vulnerabilities — dubbed ICM2SHELL and PROXYGATE — that allowed unauthenticated attackers to execute arbitrary code and fully compromise affected systems. The root cause is unpatched, internet-facing enterprise software with critical security flaws in core communication components that handle external traffic. Because no authentication is required for exploitation, any organization running unpatched SAP systems is exposed to immediate, complete compromise. This incident underscores how maximum-severity vulnerabilities in widely deployed enterprise platforms can serve as direct entry points for ransomware, espionage, and data theft at scale.

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Indicators of Compromise

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  • cve — CVE-2026-76964
  • cve — CVE-2026-120017
  • cve — CVE-2026-89103
  • cve — CVE-2026-89126
  • cve — CVE-2026-58231
  • cve — CVE-2026-44756
  • cve — CVE-2026-89111

Entities

SAP (vendor)NetWeaver (product)Web Dispatcher (product)Gateway (product)Commerce Cloud (product)OAuth2 (technology)