SAP patches four CVSS 10.0 flaws, including unauthenticated RCE
The November fixes cover NetWeaver ICM, Web Dispatcher, Gateway, and SAML, and none require user interaction.
Unauthenticated memory corruption in SAP Web Dispatcher
SAP Web Dispatcher does not sufficiently validate certain network input handled by an internal component, allowing memory corruption (heap-based buffer overflow). An unauthenticated attacker can trigger it by sending specially crafted network traffic, with no user interaction. Successful exploitation can execute arbitrary code and fully compromise confidentiality, integrity, and availability. SAP has not listed affected builds.
What to do: Apply SAP's update for CVE-2026-89126. SAP has not listed a fixed version or workaround.
| Product | Affected |
|---|---|
| SAP Web Dispatcher | — |
Order-of-magnitude estimate by the model from install counts, market share and public scan data it knows; verify before quoting.
SAP Web Dispatcher does not sufficiently validate certain network input processed by an internal component. An unauthenticated attacker could send specially crafted network traffic to trigger a memory corruption condition in the affected functionality. Successful exploitation could allow the attacker to execute arbitrary code and fully compromise the system, resulting in a high impact on confidentiality, integrity and availability of the system.
The November fixes cover NetWeaver ICM, Web Dispatcher, Gateway, and SAML, and none require user interaction.
Onapsis found no exploitation; network attackers can run commands as the SAP installation owner, <sid>adm.
Onapsis gave SAP a working unauthenticated exploit for ICM2SHELL; the November notes also cover ProxyGate and a SAML impersonation bug.
Onapsis names the memory-corruption bugs ICM2SHELL and the Gateway pre-auth issue PROXYGATE; attacks on these four are not reported.
The bulletin lists 35 new notes and does not report active exploitation of the patched issues.
Unauthenticated memory corruption in ICM and Web Dispatcher may allow code execution; exploitation is not discussed.
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