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

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

- **Severity:** Critical 9.6 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 10 Feb 2026
- **Updated:** 10 Feb 2026
- **Also known as:** GHSA-464q-7rxg-4rqx

## 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 (Missing Authorization)

## Which versions are affected by CVE-2026-0509?

It affects 3 products.


Products: 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.

## Is CVE-2026-0509 being exploited?

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

## Other vulnerabilities in SAP_SE SAP NetWeaver Application Server ABAP and ABAP Platform

- [CVE-2022-29616](https://insights.sbomify.com/CVE-2022-29616/): Memory corruption in SAP Host Agent (high 7.5)
- [CVE-2022-27656](https://insights.sbomify.com/CVE-2022-27656/): Cross-site scripting in SAP NetWeaver AS for ABAP and Java (ICM Administration UI) (medium 6.1)
- [CVE-2026-24320](https://insights.sbomify.com/CVE-2026-24320/): Memory Corruption vulnerability in SAP NetWeaver and ABAP Platform (Application Server ABAP) (low 3.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-0509 and fix it if it is affected.

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

Affected product: SAP_SE SAP NetWeaver Application Server ABAP and ABAP Platform. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-0509/ (Markdown: https://insights.sbomify.com/CVE-2026-0509/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-0509
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-0509
- OSV: https://osv.dev/vulnerability/CVE-2026-0509

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-0509/
Summaries are generated and may contain mistakes; the official description above is the record.