Zero-day vulnerability in SAP NetWeaver

Arbitrary file upload
CVE-2025-31324

Vulnerability details

Advisory: SB2025042521 - Arbitrary file upload in SAP NetWeaver Visual Composer Metadata Uploader

Vulnerable component: SAP NetWeaver

CVE-ID: CVE-2025-31324

CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C

CWE-ID: CWE-434 - Unrestricted Upload of File with Dangerous Type

Description:

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to insufficient validation of file during file upload in Metadata Uploader within the Visual Composer development server. A remote non-authenticated attacker can upload a malicious file and execute it on the server.

Note, the vulnerability is being actively exploited in the wild.

External links:

https://support.sap.com/en/my-support/knowledge-base/security-notes-news/april-2025.html

https://reliaquest.com/blog/threat-spotlight-reliaquest-uncovers-vulnerability-behind-sap-netweaver-compromise/

About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.