SAP NetWeaver Java Log Viewer unsafe deserialisation – remote OS takeover
CVE-2025-42963 Published on July 8, 2025
Insecure Deserialization in SAP NetWeaver Application Server for Java (Log Viewer )
A critical vulnerability in SAP NetWeaver Application server for Java Log Viewer enables authenticated administrator users to exploit unsafe Java object deserialization. Successful exploitation can lead to full operating system compromise, granting attackers complete control over the affected system. This results in a severe impact on the confidentiality, integrity, and availability of the application and host environment.
Vulnerability Analysis
CVE-2025-42963 can be exploited with network access, and requires user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.
Weakness Type
What is a Marshaling, Unmarshaling Vulnerability?
The application deserializes untrusted data without sufficiently verifying that the resulting data will be valid.
CVE-2025-42963 has been classified to as a Marshaling, Unmarshaling vulnerability or weakness.
Products Associated with CVE-2025-42963
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Affected Versions
SAP_SE SAP NetWeaver Application Server for Java (Log Viewer ) Version LMNWABASICAPPS 7.50 is affected by CVE-2025-42963Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.