CVE-2026-109793: Denial of Service (DoS) vulnerability in SAP NetWeaver Application Server ABAP (Internet Communication Manager) and SAP Web Dispatcher

Published Nov 10, 2026

Updated

SAP NetWeaver Application Server ABAP and SAP Web Dispatcher do not sufficiently validate certain header values processed during inbound request handling. An unauthenticated attacker could send a specially crafted request to cause the affected process to become unavailable.This results in a high impact on availability. There is no impact on confidentiality and integrity.

Affected Software

2 affected components

SAP NetWeaver Application Server ABAP

SAP SAP Web Dispatcher

Event History

Nov 10, 2026

CVE Published

via MITRE·12:36 AM

Data Sourced

via MITRE·12:36 AM

DescriptionSeverity

Data Sourced

via NVD·01:17 AM

DescriptionSeverityWeakness

Frequently Asked Questions

Who can exploit this vulnerability?

An unauthenticated attacker can exploit it remotely by sending a specially crafted inbound request. No user interaction or prior privileges are required.

What is the impact of a successful attack?

The affected process can become unavailable, causing a denial of service. The provided information indicates no confidentiality or integrity impact.

Which components should be checked for exposure?

Check SAP NetWeaver Application Server ABAP instances using the Internet Communication Manager and SAP Web Dispatcher deployments that handle inbound requests. The issue is triggered through insufficient validation of certain request header values.