SAP September 2026 Security Update Fixes 4 Critical Vulnerabilities and 15 Other Flaws
SAP's September 2026 Patch Tuesday ships 19 security notes, including four criticals led by a CVSS 10.0 memory-corruption flaw in Extended Passport Processing.
SAP released 19 new Security Notes plus one update, fixing four critical vulnerabilities and 15 additional flaws. The most urgent is CVE-2026-44756 (CVSS 10.0), memory corruption in Extended Passport (EPP) Processing affecting many SAP Kernel and Web Dispatcher releases. Other criticals include CVE-2026-58240 (NetWeaver Message Server missing authentication, 9.8), CVE-2026-76969 (credential disclosure in CAP sap/cds-mtxs, 9.4), and CVE-2026-66768 (improper access control in SAP GUI for Java, 9.0). High-severity fixes cover XXE in Integration Suite Trading Partner Management, deserialization in NetWeaver Business Client, and memory corruption in NetWeaver AS for ABAP.
SAP Security Updates September 2026 – Critical Flaws Patched in SAP NetWeaver, Cloud and Extended Passport
SAP's September 2026 Patch Day fixes 19 notes including CVE-2026-44756 (CVSS 10.0), unauthenticated memory corruption in SAP Extended Passport Processing kernels.
SAP shipped 19 new security notes plus one update across NetWeaver, S/4HANA, Integration Suite, Commerce Cloud, and Cloud Application Programming Model. Top issues include CVE-2026-44756 (CVSS 10.0 memory corruption in SAP Extended Passport Processing across many KERNEL and Web Dispatcher versions), CVE-2026-58240 (CVSS 9.8 missing authentication in NetWeaver Message Server), CVE-2026-76969 (CVSS 9.4 credential disclosure in CAP library sap/cds-mtxs), and CVE-2026-66768 (CVSS 9.0 access control flaw in SAP GUI for Java). No exploitation is reported; organizations running affected kernels are urged to patch urgently.
SAP Patches Critical Extended Passport Processing Vulnerability
SAP patches CVSS 10.0 flaw CVE-2026-44756 (OVERPASS) enabling unauthenticated RCE in S/4HANA and NetWeaver, plus three other criticals; no in-the-wild exploitation reported.
CVE-2026-44756 is a CVSS 10.0 memory corruption flaw in Extended Passport (EPP) deserialization, triggered when a user session opens across web, SAP GUI, and RFC vectors. Exploitation yields command execution as the SAP OS account, database credential and password hash recovery, session reading, and data or binary modification; affected products include S/4HANA, ERP/ECC, NetWeaver, Web Dispatcher, and BW/4HANA. Three other criticals were patched: CVE-2026-58240 (S4GET, missing authentication affecting all S/4HANA 2025 and earlier releases), CVE-2026-76969 (CAP credential disclosure), and CVE-2026-66768 (NetWeaver access control). Onapsis and SAP report no indicators of in-the-wild exploitation.
September 2026 Patch Tuesday roundup: Plugs for two zero day holes among almost 1,000 fixes in Windows
Microsoft's September 2026 Patch Tuesday ships 964 fixes including two exploited Windows zero-days (CVE-2026-85880, CVE-2026-81963) and a wormable DNS RCE.
Microsoft's September 2026 Patch Tuesday includes 964 Microsoft vulnerabilities requiring customer action, a record attributed to AI-assisted bug discovery, plus 174 third-party/open-source and 23 Chromium/Edge CVEs. Two zero-days are exploited in the wild: CVE-2026-85880, a Windows ALPC heap overflow enabling AppContainer sandbox escape and privilege escalation, and CVE-2026-81963, a Windows Update Stack escalation to SYSTEM. CVE-2026-69730, an unauthenticated Windows DNS RCE, is not yet exploited but Microsoft expects exploitation, and roughly 20 bugs could be wormable. Separately, SAP issued a critical CVSS 10.0 fix for the EPP component used in S/4HANA and NetWeaver.
SAP Patches Maximum Severity “Overpass” Flaw
Onapsis warns over 10,000 internet-facing SAP systems may be exposed to maximum-severity unauthenticated RCE flaw CVE-2026-44756 in SAP Extended Passport.
Onapsis Research Labs discovered CVE-2026-44756, a memory corruption flaw in SAP Extended Passport (EPP) processing caused by missing boundary validation during deserialization. The bug is reachable from the SAP GUI and RFC layers, is remotely exploitable without authentication by default, and could let attackers run arbitrary OS commands with SAP administrative privileges. No active exploitation was observed at publication. Onapsis also flagged critical S4GET bug CVE-2026-58240 (CVSS 9.8) in the S/4HANA Message Server, credential disclosure CVE-2026-76969 in SAP CAP, and improper access control CVE-2026-66768 in NetWeaver.
SAP Patches CVSS 10.0 Kernel Flaw Enabling Unauthenticated Remote Code Execution
SAP patched CVE-2026-44756 (CVSS 10.0), an unauthenticated kernel memory corruption allowing OS command execution, plus three other critical flaws.
SAP's September security updates include CVE-2026-44756 (OVERPASS, CVSS 10.0), a missing boundary validation during deserialization of Extended Passport (EPP) data in the SAP kernel, enabling unauthenticated attackers to run arbitrary OS commands with SAP administrative privileges. Also patched: CVE-2026-58240 (S4GET, CVSS 9.8), a missing authentication check in SAP NetWeaver Message Server yielding RCE as <sid>adm; CVE-2026-76969 (9.4), credential disclosure in SAP Cloud Application Programming Model multi-tenant apps; and CVE-2026-66768 (9.0), improper access control in SAP NetWeaver SAP GUI for Java. Onapsis, which discovered the flaws, says none have been exploited to date and recommends prioritizing internet-facing SAP systems.
Synthesized builds Test Data Agent to validate AI agents with production-like data
Synthesized announced a Test Data Agent that provisions production-like data and system states to validate enterprise AI agents before deployment.
Synthesized unveiled its Test Data Agent, an agentic infrastructure capability that generates, masks, and subsets production-representative data for testing AI agents under realistic enterprise conditions. It integrates with agent development, evaluation, testing, and orchestration frameworks, with purpose-built support for complex SAP estates including finance, procurement, and supply-chain workflows and ECC-to-S/4HANA transformation programs. The product runs in on-premises, private-cloud, and hybrid environments and exposes REST APIs and CI/CD triggers for repeatable validation scenarios.