# CVE-2026-58249: SAP NetWeaver and Web Dispatcher input validation vulnerability

Source: https://junglewise.ai/threats/cve-2026-58249-sap-netweaver-and-sap-web-dispatcher-do-not-properly-validate  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-13. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-58249 · Severity: high · CVSS 7.5 · Published 2026-10-13

SAP NetWeaver and Web Dispatcher are enterprise application platforms that handle business-critical processes. An unauthenticated attacker can send a specially crafted request to crash these services, disrupting business operations and availability. The attacker does not gain access to data or the ability to modify systems, only the ability to cause downtime.

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

## Quick answers

**Is CVE-2026-58249 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-58249 being exploited in the wild.

**How severe is CVE-2026-58249?** High severity, with a CVSS score of 7.5, published 13 October 2026.

**Which products and versions are affected?** SAP NetWeaver; SAP Web Dispatcher.

**Is there a fix for CVE-2026-58249?** 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-2026-58249 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-58249?** Check whether you run SAP NetWeaver or SAP Web Dispatcher. 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

An input validation flaw in an internal protocol component of SAP NetWeaver and Web Dispatcher allows unauthenticated attackers to trigger a memory-handling error (likely a buffer overflow or similar memory corruption) via specially crafted requests. Exploitation results in process termination and denial of service; no confidentiality or integrity impact exists.

## Affected products

- SAP NetWeaver
- SAP Web Dispatcher

## Timeline

- 2026-10-13: disclosed

## References

- [https://me.sap.com/notes/3765424](https://me.sap.com/notes/3765424)
- [https://url.sap/sapsecuritypatchday](https://url.sap/sapsecuritypatchday)

## Related threats

- [SAP Web Dispatcher input validation memory corruption](https://junglewise.ai/threats/cve-2026-89126-sap-web-dispatcher-does-not-sufficiently-validate-certain-network)
- [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 NetWeaver Application Server ABAP memory corruption denial of service](https://junglewise.ai/threats/cve-2026-76973-due-to-a-memory-corruption-vulnerability-in-application-server)
- [SAP NetWeaver ABAP RFC protocol memory corruption](https://junglewise.ai/threats/cve-2026-76966-due-to-improper-rfc-protocol-validation-in-the-sap-kernel-used-by)