SAP Security Patch Day – Critical SAP NetWeaver, Dispatcher and Gateway Vulnerabilities Patched

SAP’s November 2026 Security Patch Day brings fixes for critical vulnerabilities across SAP NetWeaver, Web Dispatcher, Gateway, and other business applications.

Released on November 10, the update includes 35 new security notes, four GitHub security advisories, and three updates to earlier notes.

Four vulnerabilities carry the maximum CVSS score of 10.0, making them the leading priorities for security teams. The release addresses memory corruption, missing authentication, broken access control, and code injection flaws.

SAP urges customers to review its security support portal and apply relevant corrections promptly. Administrators should check individual notes for affected components, patch requirements, and deployment instructions.

Among the most serious issues is CVE-2026-76964, a memory corruption vulnerability in SAP NetWeaver AS ABAP’s Internet Communication Manager.

According to the published CVE record, the software does not properly validate certain network input. An attacker without credentials could send crafted traffic, trigger memory corruption, and potentially execute arbitrary code, fully compromising the affected system.

SAP Security Patch Day

SAP Security Note 3778530 addresses this vulnerability. Affected releases include KRNL64UC 7.53 and KERNEL versions 7.53, 7.54, 7.77, 7.93, 9.16, 9.18, and 9.20. Its CVSS vector indicates network access, low attack complexity, and no privilege or user interaction requirement.

Another maximum-severity flaw, CVE-2026-89126, affects SAP Web Dispatcher and is covered by Note 3778556. The memory corruption issue spans several kernel, Web Dispatcher, HDB, and runtime components. CVE-2026-89103 addresses broken access control in SAP Gateway and is covered by Note 3798345.

The fourth 10.0-rated issue, CVE-2026-120017, involves missing authentication in the SAML2 Service Provider within SAP NetWeaver AS ABAP and ABAP Platform.

Note 3849308 covers affected SAP_BASIS releases from selected older versions through 922. All four listed vectors indicate that exploitation requires neither credentials nor user interaction.

Three further critical notes carry scores of 9.9. These cover CVE-2026-109803 in NetWeaver Knowledge Management XML Forms, CVE-2026-76965 in the ABAP Application Server, and CVE-2026-109795 in S4CRM. Their listed vectors require low-level privileges, distinguishing them from the four unauthenticated maximum-severity issues.

SAP also patched cross-site request forgery in Web Dispatcher and Internet Communication Manager, rated 9.6, and an XML external entity vulnerability in BusinessObjects Web Intelligence, rated 9.1.

Developers should also review the GitHub advisories. These include improper JWT signature verification in SAP Cloud SDK for Python versions below 0.63.1, path traversal in its Agent Memory module, and a cross-tenant sandbox takeover issue in SAP/astonish.

The release follows October’s SAP security updates, which also addressed critical code injection and access control weaknesses. Earlier September SAP patches covered additional NetWeaver and cloud risks, reinforcing the need to track successive monthly fixes rather than treat each release separately.

Security teams should match installed component versions against the November notes, prioritize reachable systems affected by critical flaws, and test patches before deploying to production.

The supplied bulletin does not report active exploitation. Severity scores describe technical risk, not evidence that attackers have already compromised vulnerable installations.

Give your SOC the alert context to stops incidents quickly. Integrate Threat Intel from 16K SOCs.

The post SAP Security Patch Day – Critical SAP NetWeaver, Dispatcher and Gateway Vulnerabilities Patched appeared first on Cyber Security News.