CVE-2025-42999

Known Exploited Public Exploit

Insecure Deserialization in SAP NetWeaver (Visual Composer development server)

Description

SAP NetWeaver Visual Composer Metadata Uploader is vulnerable when a privileged user can upload untrusted or malicious content which, when deserialized, could potentially lead to a compromise of confidentiality, integrity, and availability of the host system.

References

Link	Tags
https://me.sap.com/notes/3604119	permissions required
https://url.sap/sapsecuritypatchday	not applicable
https://onapsis.com/blog/active-exploitation-of-sap-vulnerability-cve-2025-31324/	exploit third party advisory

Frequently Asked Questions

What is the severity of CVE-2025-42999?: CVE-2025-42999 has been scored as a critical severity vulnerability.
How to fix CVE-2025-42999?: To fix CVE-2025-42999, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-42999 being actively exploited in the wild?: It is confirmed that CVE-2025-42999 is actively exploited. Be extra cautious if you are using vulnerable components. According to its EPSS score, there is a ~15% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-42999?: CVE-2025-42999 affects SAP_SE SAP NetWeaver (Visual Composer development server).

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Description

Category

CWE-502 – Deserialization of Untrusted Data

References

Frequently Asked Questions