CVE-2025-42963 Insecure Deserialization in SAP NetWeaver Application Server for Java (Log Viewer )
Authenticated administrators can exploit unsafe Java deserialization in SAP NetWeaver Log Viewer to achieve full operating system compromise.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-42963?
CVE-2025-42963 is a critical unsafe deserialization vulnerability in SAP_SE SAP NetWeaver Application Server for Java (Log Viewer ), published on 8 Jul 2025. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
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.
Weakness: CWE-502
Which versions are affected by CVE-2025-42963?
How do I fix CVE-2025-42963?
No fix has been published for CVE-2025-42963 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2025-42963 being exploited?
There is no known exploitation of CVE-2025-42963 in the wild and no public exploit code.
Sources
Also known as GHSA-76j3-vxfx-99xf.