Vulnerabilities SAP Patches Critical NetWeaver, Commerce Vulnerabilities The flaws could lead to the disclosure of sensitive information, memory corruption, and disruption of normal system usage. By Ionut Arghire | June 9, 2026 (8:15 AM ET) Flipboard Reddit Whatsapp Whatsapp Email Enterprise software maker SAP on Tuesday released 15 new security notes, including four that resolve critical-severity vulnerabilities in NetWeaver, Commerce, and Data Hub. The most severe of the resolved bugs is CVE-2026-44748 (CVSS score of 9.9), described as an XML Signature Wrapping issue in the SAML Authentication of NetWeaver AS ABAP and ABAP Platform. An authenticated attacker with normal privileges could “obtain a valid signed message and send modified signed XML documents with tampered identity information to the verifier,” application security firm Onapsis explains . Due to the security defect, the modified identity information is accepted, providing the attacker with access to sensitive user data and potentially allowing them to disrupt normal system usage. Disabling SAML authentication temporarily mitigates the vulnerability, Onapsis explains. The second critical-severity flaw patched on SAP’s June 2026 security patch day is CVE-2026-27671 (CVSS score of 9.8), a memory corruption issue in NetWeaver and ABAP Platform. Advertisement. Scroll to continue reading. The bug is due to the SAP kernel’s improper validation of the RFC protocol, allowing unauthenticated attackers to send crafted requests that target logic errors in memory management. Affecting Commerce Cloud and Data Hub, the third critical-severity weakness that SAP resolved this week is CVE-2026-22732 (CVSS score of 9.1), which impacts all applications that rely on the Spring Security framework. “When applications specify HTTP response headers for servlet applications using Spring Security, there is the possibility that the HTTP Headers will not be written,” a NIST advisory reads. SAP on Tuesday also resolved a critical directory traversal vulnerability in NetWeaver Application Server Java (Web Container). Tracked as CVE-2026-40128 (CVSS score of 9.0), the issue allows unauthenticated attackers to send malicious HTTP logon requests, manipulating file inclusion parameters and allowing the attacker to access sensitive information or cause denial-of-service (DoS) conditions. On Tuesday, SAP also released a high-severity security note resolving multiple Apache Tomcat flaws in Commerce Cloud, and another to address a missing authorization check in NetWeaver and ABAP Platform. Related: Check Point VPN Zero-Day Exploited in Qilin Ransomware Attacks Related: Everybody Is Vibe Coding But Nobody Told the Security Team Related: Apple Rejected 2 Million App Store Submissions in 2025 for Security and Fraud Prevention Related: CrewAI Vulnerabilities Expose Devices to Hacking Written By Ionut Arghire Ionut Arghire is an international correspondent for SecurityWeek. Daily Briefing Newsletter Subscribe to the SecurityWeek Email Briefing for the latest cybersecurity threats, trends, and expert insights. More from Ionut Arghire Everest Forms Vulnerability Exploited to Hack WordPress Sites 174,000 Impacted by Lansing Community College Data Breach Silent Ransom Group Uses DNS Fast Flux in Attacks SolarWinds Serv-U Vulnerability Exploited in the Wild Emphere Raises $2.1 Million for AI-Powered Vulnerability Remediation Opal Security Raises $23 Million for AI-Native Identity Governance Hackers Leak DentaQuest Information Impacting 2.6 Million Chrome 149 Patches 429 Vulnerabilities Latest News Over 100 NPM, PyPI Packages Hit in New Shai-Hulud Supply Chain Attacks Will AI Kill the Bug Bounty Industry? Check Point VPN Zero-Day Exploited in Qilin Ransomware Attacks Google Patches 5th Chrome Zero-Day Exploited in 2026 A Security Raises $37 Million for Autonomous Offensive Security Platform Everybody Is Vibe Coding But Nobody Told the Security Team WhatsApp Catches Spyware Firm NSO Defying No-Hacking Court Order Cybersecurity M&A Roundup: 26 Deals Announced in May 2026 Trending Daily Briefing Newsletter Subscribe to the SecurityWeek Email Briefing to stay informed on the latest threats, trends, and technology, along with insightful columns from industry experts. Webinar: Third-Party Risk in Practice June 4, 2026 Organizations are investing heavily in third-party risk management, but breaches, delays, and blind spots continue to persist. Join this live webinar as we examine the gap between how organizations think their third-party risk programs are performing and what’s actually happening in practice. Register Virtual Roundtable: CISO Forum 2026 Mid-Year Review June 10, 2026 Explore how attackers are using AI to scale threats and how security teams can respond with AI-driven defenses. Protecting against unmonitored use of generative AI (Shadow AI) in business units and building and enforcing AI governance frameworks. Register People on the Move Opal Security has appointed CPO, CTO, VP of Field Engineering, VP of Marketing, and Head of Product and Solutions Marketing. The Department of the Air Force has appointed Ashley Devoto as Chief Information Officer. Bartley Richardson has been named Chief AI and Autonomous Systems Officer at CrowdStrike. More People On The Move Expert Insights Everybody Is Vibe Coding But Nobody Told the Security Team AI-driven development is not something organizations can or should block. But it must be governed. (Danelle Au) The Zero-Knowledge Threat Actor and the End of Responsible Disclosure AI can help attackers generate malware, create malicious payloads, bypass simple security checks, and convert vague malicious intent into functional code. (Etay Maor) Raising the Cybersecurity Stakes: Ante up for the Agentic Era CISOs are now facing machine-speed attacks and asking, “How do I agent?” The industry must provide remediation at scale. (Nadir Izrael) Caught Off Guard: Securing AI After It Hits Production As enterprises rush AI projects into production, security teams are increasingly being forced into reactive mode. (Joshua Goldfarb) Cyber Resilience is the New Business Continuity Plan The organizations best prepared to face disruption are those that align security, continuity and risk management around what the business cannot afford to lose. (Steve Durbin) Flipboard Reddit Whatsapp Whatsapp Email