SAP NetWeaver AS Java ILM Data Archiving Service Insecure Deserialization
Impact on Business
An authenticated attacker with high privileges can exploit this vulnerability to execute arbitrary operating system commands on the server. This could lead to a full compromise of the affected system, significantly impacting the confidentiality, integrity, and availability of the business application and its data.
Vulnerability Details
A Java deserialization vulnerability exists in the SAP Data Archiving Service (DAS). The vulnerability is located in the PutMethod functionality, which processes incoming HTTP requests. The application fails to properly validate serialized Java objects received in the request body before deserializing them. An authenticated attacker with specific privileges can send a malicious serialized object to the vulnerable endpoint, leading to the execution of arbitrary commands on the underlying operating system with the privileges of the SAP service user.
Solution
SAP has released SAP Note 3610892 which provides patched versions of the affected components.
The patches can be downloaded from https://me.sap.com/notes/3610892.
Onapsis strongly recommends SAP customers to download the related security fixes and apply them to the affected components in order to reduce business risks.
Report Timeline
- 05/14/2025: Onapsis reports vulnerability to SAP
- 07/08/2025: SAP issues the patch
References
Advisory Information
- Public Release Date: 07/30/2026
- Security Advisory ID: ONAPSIS-2026-00023
- Researcher(s): Adrian Radulescu
Vulnerability Information
- Vendor: SAP
- Affected Components: SAP NetWeaver Application Server for Java (Check SAP Note 3610892 for detailed information on affected releases)
- Vulnerability Class: CWE-502: Deserialization of Untrusted Data
- CVSS v3 score: 9.1 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H)
- Risk Level: Critical
- Assigned CVE: CVE-2025-42966
- Vendor patch Information: SAP Security NOTE 3610892
Affected Components Description
The vulnerability affects the Information Lifecycle Management (BC-ILM) Data Archiving Service (DAS) component running on SAP NetWeaver Application Server for Java.
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Find all reported vulnerabilities at: https://github.com/Onapsis/vulnerability_advisories
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