Advisory
SAP takes the security of its vast product portfolio very seriously and thus releases security fixes for
vulnerabilities reported by external researchers and their customers every second Tuesday of the month.
SAP Note 3687285
was released on
10.02.2026 and deals with
"[CVE-2026-23685] Insecure Deserialization vulnerability in SAP NetWeaver (JMS service)" within Java.
We advice you to follow the instructions, to resolve
insecure deserialization
with a
medium potential for exploitation
in component BC-JAS-JMS.
According to SAP Security Advisory team a workaround does not exist. It is advisable to implement the correction as part of maintenance.
Risk specification
SAP NetWeaver (JMS service) allows an authenticated administrator with local access to submit specially crafted serialized content that is processed by the application, potentially resulting in a denial of service due to unintended behavior during internal logic execution.
Solution
The vulnerable jackson-databind library has been updated to a secure version to prevent insecure deserialization during JSON processing.
Affected System
SAP Netweaver Application Server Java is part of the SAP NetWeaver Application Platform. It provides the complete infrastructure for deploying and running Java applications.
- The AS Java Home: SAP Netweaver Application Server Java wiki
- A dedicated SAP NetWeaver 7.40 Application Server for Java Security Guide exists.
The advisory is valid for
