# CVE-2026-89126: SAP Web Dispatcher input validation memory corruption

Source: https://junglewise.ai/threats/cve-2026-89126-sap-web-dispatcher-does-not-sufficiently-validate-certain-network  
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-2026-89126 · Severity: critical · CVSS 10 · Published 2026-11-10

SAP Web Dispatcher is a gateway component that routes and filters network traffic for SAP applications. An unauthenticated attacker can send specially crafted network packets to trigger a memory corruption vulnerability, allowing arbitrary code execution and complete compromise of the system including confidentiality, integrity, and availability.

Technologies: [SAP Web Dispatcher](https://junglewise.ai/threats/technologies/web-dispatcher). Vendors: [SAP](https://junglewise.ai/threats/vendors/sap).

## Quick answers

**Is CVE-2026-89126 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-89126 being exploited in the wild.

**How severe is CVE-2026-89126?** Critical severity, with a CVSS score of 10, published 10 November 2026.

**Which products and versions are affected?** SAP Web Dispatcher <UNKNOWN>.

**Is there a fix for CVE-2026-89126?** 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-2026-89126 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-89126?** Check whether you run SAP Web Dispatcher at an affected version. 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 vulnerability stems from insufficient input validation in an internal component of SAP Web Dispatcher that processes network traffic. An unauthenticated attacker can exploit this via network-based delivery to trigger memory corruption. Successful exploitation results in arbitrary code execution with no authentication or user interaction required.

## Affected products

- SAP Web Dispatcher <UNKNOWN>

## Timeline

- 2026-11-10: advisory

## References

- [https://me.sap.com/notes/3778556](https://me.sap.com/notes/3778556)
- [https://url.sap/sapsecuritypatchday](https://url.sap/sapsecuritypatchday)

## Related threats

- [SAP Web Dispatcher and Internet Communication Manager insecure sensitive information storage](https://junglewise.ai/threats/cve-2026-89125-due-to-insecure-storage-of-sensitive-information-in-sap-web)
- [SAP Web Dispatcher and NetWeaver Application Server ABAP CSRF in administrative functionality](https://junglewise.ai/threats/cve-2026-89119-sap-web-dispatcher-and-sap-netweaver-application-server-abap)
- [SAP Web Dispatcher input validation memory corruption](https://junglewise.ai/threats/cve-2026-109800-sap-web-dispatcher-does-not-sufficiently-validate-certain-inputs)
- [SAP NetWeaver Application Server ABAP denial of service](https://junglewise.ai/threats/cve-2026-109794-sap-netweaver-application-server-abap-abap-platform-and-sap-web)
- [SAP NetWeaver Application Server ABAP and Web Dispatcher header validation DoS](https://junglewise.ai/threats/cve-2026-109793-sap-netweaver-application-server-abap-and-sap-web-dispatcher-do)