CVE-2026-0509 Missing Authorization check in SAP NetWeaver Application Server ABAP and ABAP Platform

Critical 9.6 Published 10 Feb 2026 Updated 10 Feb 2026

Authenticated low-privileged users can execute background Remote Function Calls without required authorization, impacting integrity and availability.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-0509?

CVE-2026-0509 is a critical missing authorization vulnerability in SAP_SE SAP NetWeaver Application Server ABAP and ABAP Platform, published on 10 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

SAP NetWeaver Application Server ABAP and ABAP Platform allows an authenticated, low-privileged user to perform background Remote Function Calls without the required S_RFC authorization in certain cases. This can result in a high impact on integrity and availability, and no impact on the confidentiality of the application.

Weakness: CWE-862

Which versions are affected by CVE-2026-0509?

It affects 3 products.

Products include Sap Netweaver as Abap Kernel, Sap Netweaver as Abap Krnl64nuc, Sap Netweaver as Abap Krnl64uc.

How do I fix CVE-2026-0509?

No fix has been published for CVE-2026-0509 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-0509 being exploited?

There is no known exploitation of CVE-2026-0509 in the wild and no public exploit code.

Sources

Also known as GHSA-464q-7rxg-4rqx.