Is CVE-2026-40129 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-40129 being exploited in the wild.

How severe is CVE-2026-40129?

Medium severity, with a CVSS score of 4.3, published 12 May 2026.

Which products and versions are affected?

SAP SE SAP NetWeaver Application Server ABAP; SAP SE ABAP Platform.

Is there a fix for CVE-2026-40129?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-40129 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-40129?

Check whether you run SAP SE ABAP Platform. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-40129: SAP Application Server ABAP code injection in NetWeaver and ABAP Platform

CVE-2026-40129 · Severity: medium · CVSS 4.3 · Published 2026-05-12

A code injection vulnerability exists in SAP Application Server ABAP, a core component used for running business applications. An authenticated user could send malicious data that, when processed, executes code for other users subscribed to the same communication channel. While this could allow unauthorized changes to data, it does not currently appear to allow the theft of sensitive information or cause system outages.

Vendors: SAP SE.

Quick answers

Is CVE-2026-40129 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-40129 being exploited in the wild.
How severe is CVE-2026-40129?: Medium severity, with a CVSS score of 4.3, published 12 May 2026.
Which products and versions are affected?: SAP SE SAP NetWeaver Application Server ABAP; SAP SE ABAP Platform.
Is there a fix for CVE-2026-40129?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-40129 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-40129?: Check whether you run SAP SE ABAP Platform. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A code injection vulnerability (CWE-94) exists in SAP Application Server ABAP for SAP NetWeaver and ABAP Platform. An authenticated attacker with low privileges can send specially crafted inputs to the application. If these inputs are processed, they can be delivered to other users subscribed to the specific communication channel, leading to the execution of arbitrary code in their context. The impact is limited to integrity (low), with no reported impact on confidentiality or availability. SAP has released security note 3735359 to address this issue.

Affected products

SAP SE SAP NetWeaver Application Server ABAP
SAP SE ABAP Platform

Timeline

2026-05-12: advisory: SAP Security Patch Day release
2026-05-12: disclosed: CVE published to NVD

References

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