SAP NetWeaver Unrestricted File Upload Vulnerability (CVE-2025-31324)

SAP NetWeaver Visual Composer Metadata Uploader contains an unrestricted file upload vulnerability that allows an unauthenticated agent to upload potentially malicious executable binaries.

Published Apr 24, 2025 · Updated May 29, 2026

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Why patchRisk explained in plain English

Worst-case scenarioIf unpatched

A remote attacker, without authentication, can achieve full data confidentiality loss, arbitrary modification of data, complete denial of service or system unavailability. CISA has confirmed use of this vulnerability in known ransomware campaigns — treat as high priority for remediation. Federal agencies are required to remediate by 2025-05-20 under CISA BOD 22-01.

How the attack worksNo clicks needed

This is a Unrestricted File Upload (CWE-434) vulnerability in SAP NetWeaver. Exploitation requires remote network access, low attack complexity, no authentication required, and no user interaction required.

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Phishing link

→

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Malicious file

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Server compromised

Am I affected?Quick check

Probably yes if any of these apply:

●IT Security

●Running netweaver: 7.50

Real-world incidentsWhat we've seen

Used in known ransomware campaigns. Threat-research write-up: https://www.bleepingcomputer.com/news/security/sap-fixes-suspected-netweaver-zero-day-exploited-in-attacks/

How to patch

Manual remediation steps

Apply the Vendor Patch

This vulnerability is in the CISA Known Exploited Vulnerabilities catalog — apply the vendor's security update as soon as possible.

CISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.