CVE-2026-109793: SAP NetWeaver Application Server ABAP and Web Dispatcher header validation DoS

CVE-2026-109793 · Severity: high · CVSS 7.5 · Published 2026-11-10

SAP NetWeaver Application Server ABAP and SAP Web Dispatcher, which handle enterprise application traffic and web requests, do not properly validate certain HTTP header values. An unauthenticated attacker can send a specially crafted request to crash the affected process, causing service unavailability and business disruption, though data confidentiality and integrity are not affected.

Technologies: SAP NetWeaver Application Server ABAP, SAP Web Dispatcher. Vendors: SAP.

Quick answers

Is CVE-2026-109793 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-109793 being exploited in the wild.
How severe is CVE-2026-109793?
High severity, with a CVSS score of 7.5, published 10 November 2026.
Which products and versions are affected?
SAP NetWeaver Application Server ABAP; SAP Web Dispatcher.
Is there a fix for CVE-2026-109793?
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-2026-109793 attacked?
It is attacked over the network, in a hosted service.
Am I affected by CVE-2026-109793?
Check whether you run SAP NetWeaver Application Server ABAP 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

The vulnerability involves insufficient validation of header values during inbound request processing in SAP NetWeaver AS ABAP and SAP Web Dispatcher. An unauthenticated attacker can exploit this via the network by sending a malicious HTTP request, leading to denial of service through process termination. The fix is expected to be available through SAP Security Notes published on their patch day schedule.

Affected products

  • SAP NetWeaver Application Server ABAP
  • SAP Web Dispatcher

Timeline

  • 2026-11-10: disclosed

References

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