# CVE-2026-120010: SAP NetWeaver Application Server heap buffer overflow in Message Server

Source: https://junglewise.ai/threats/cve-2026-120010-sap-netweaver-application-server-sap-message-server-does-not  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-120010 · Severity: high · CVSS 7.5 · Published 2026-11-10

SAP NetWeaver Application Server's Message Server component processes HTTP requests and does not properly allocate memory for certain payloads, leading to a heap buffer overflow. An unauthenticated attacker can trigger this vulnerability by sending a specially crafted request, causing the Message Server to crash and become unavailable until manually restarted, disrupting operations but not exposing data.

Vendors: [SAP](https://junglewise.ai/threats/vendors/sap).

## Quick answers

**Is CVE-2026-120010 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-120010 being exploited in the wild.

**How severe is CVE-2026-120010?** High severity, with a CVSS score of 7.5, published 10 November 2026.

**Which products and versions are affected?** SAP NetWeaver Application Server.

**Is there a fix for CVE-2026-120010?** 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-2026-120010 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-120010?** Check whether you run SAP NetWeaver Application Server. 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

The SAP Message Server component fails to correctly size heap memory allocations when handling certain HTTP requests, resulting in a heap buffer overflow. The vulnerability requires no authentication and can be triggered over the network. Successful exploitation causes a denial of service through component crash; there is no confidentiality or integrity impact.

## Affected products

- SAP NetWeaver Application Server

## Timeline

- 2026-11-10: disclosed

## References

- [https://me.sap.com/notes/3805570](https://me.sap.com/notes/3805570)
- [https://url.sap/sapsecuritypatchday](https://url.sap/sapsecuritypatchday)