# SAP NetWeaver Visual Composer RCE actively exploited

Published: 2026-06-09 · Severity: high · Sectors: government-national, technology
Canonical: https://vorant.io/reports/06528aa7-9a9d-5a3e-ba0a-b50489655365/sap-netweaver-visual-composer-rce-actively-exploited

> Unauthenticated metadata uploader flaw in SAP Visual Composer allows remote code execution and is being exploited in the wild.

A critical vulnerability has been discovered in SAP NetWeaver Visual Composer, a web-based business process modelling tool used to create application components without code. The flaw affects VCFRAMEWORK version 7.50 and stems from improper authorization on the Metadata Uploader component, which allows unauthenticated attackers to upload malicious executable binaries. Successful exploitation grants remote code execution in the system context and impacts confidentiality, integrity, and availability. ReliaQuest and watchtower have confirmed active exploitation of CVE-2025-31324 in the wild. Defenders should immediately apply SAP patches after testing, implement network segmentation to isolate affected systems, enforce least-privilege access controls, and conduct vulnerability scanning and penetration testing to identify compromised instances.

## Mentioned in this report

- Vulnerabilities: CVE-2025-31324 (KEV)

## Detection guidance (public sample)

### SAP NetWeaver Visual Composer Metadata Uploader POST Request

ATT&CK: T1190

Detects POST requests to the Visual Composer Metadata Uploader endpoint, abused in CVE-2025-31324 for unauthenticated upload of malicious binaries. Auto-generated starting point — validate and tune in your environment before deploying. IOC matches can false-positive on shared infrastructure and decay as adversary infrastructure rotates.

```yaml
title: SAP NetWeaver Visual Composer Metadata Uploader POST Request
description: Detects HTTP POST requests to the SAP NetWeaver Visual Composer Metadata
  Uploader component, which is the vulnerable endpoint in CVE-2025-31324 (unauthenticated
  file upload leading to RCE). The component is rarely used legitimately on internet-facing
  systems, so any request should be reviewed.
tags:
- attack.initial-access
- attack.t1190
logsource:
  category: webserver
detection:
  selection:
    cs-method: POST
    cs-uri-stem|contains: /developmentserver/metadatauploader
  condition: selection
falsepositives:
- Legitimate Visual Composer developers uploading metadata on an internal development
  server
- Authorized vulnerability scanners or penetration tests against SAP systems
level: high
id: 70c33337-7565-518b-a89f-7f57410c3d64
status: experimental
author: Vorant
references:
- https://www.cisecurity.org/advisory/a-vulnerability-in-sap-netweaver-visual-composer-could-allow-for-remote-code-execution_2025-044
```

### SAP NetWeaver Java Process Spawning Shell or Download Utility on Windows

ATT&CK: T1190

Detects the SAP NetWeaver Java server process spawning command interpreters or LOLBins, indicating post-exploitation RCE after an upload exploit such as CVE-2025-31324. Auto-generated starting point — validate and tune in your environment before deploying. IOC matches can false-positive on shared infrastructure and decay as adversary infrastructure rotates.

```yaml
title: SAP NetWeaver Java Process Spawning Shell or Download Utility on Windows
description: Detects the SAP NetWeaver Java server process (jstart.exe or java.exe
  running from a usr\sap directory) spawning cmd, PowerShell or common download/execution
  utilities. This indicates code execution in the SAP service context, as seen after
  exploitation of the Visual Composer Metadata Uploader flaw.
tags:
- attack.initial-access
- attack.t1190
- attack.execution
logsource:
  category: process_creation
  product: windows
detection:
  parent_jstart:
    ParentImage|endswith: \jstart.exe
  parent_java:
    ParentImage|contains: \usr\sap\
    ParentImage|endswith: \java.exe
  child:
    Image|endswith:
    - \cmd.exe
    - \powershell.exe
    - \pwsh.exe
    - \certutil.exe
    - \bitsadmin.exe
    - \mshta.exe
    - \rundll32.exe
    - \regsvr32.exe
    - \curl.exe
    - \whoami.exe
  condition: 1 of parent_* and child
falsepositives:
- SAP administrators running maintenance scripts launched from the Java server process
- Custom SAP housekeeping jobs that invoke cmd.exe
level: high
id: 00873b55-51ca-5d3f-879b-a9bad6c58129
status: experimental
author: Vorant
references:
- https://www.cisecurity.org/advisory/a-vulnerability-in-sap-netweaver-visual-composer-could-allow-for-remote-code-execution_2025-044
```

### SAP NetWeaver Java Process Spawning Shell or Download Utility on Linux

ATT&CK: T1190

Detects the SAP NetWeaver Java server process on Linux spawning a shell or download tool, indicating RCE after exploitation of an upload flaw. Auto-generated starting point — validate and tune in your environment before deploying. IOC matches can false-positive on shared infrastructure and decay as adversary infrastructure rotates.

```yaml
title: SAP NetWeaver Java Process Spawning Shell or Download Utility on Linux
description: Detects a Java or jstart process running from a /usr/sap path spawning
  a shell or download utility on Linux. This indicates web-exploit-driven code execution
  on SAP NetWeaver, as in CVE-2025-31324.
tags:
- attack.initial-access
- attack.t1190
- attack.execution
logsource:
  category: process_creation
  product: linux
detection:
  selection_parent:
    ParentImage|contains: /usr/sap/
    ParentImage|endswith:
    - /java
    - /jstart
  selection_child:
    Image|endswith:
    - /sh
    - /bash
    - /dash
    - /curl
    - /wget
    - /nc
    - /python
    - /python3
    - /perl
  condition: selection_parent and selection_child
falsepositives:
- SAP-supplied startup or housekeeping scripts invoked by the Java server
- Administrators running diagnostic shell commands through SAP management tooling
level: high
id: 2d29a34a-e344-55bc-8440-ed4b966c6841
status: experimental
author: Vorant
references:
- https://www.cisecurity.org/advisory/a-vulnerability-in-sap-netweaver-visual-composer-could-allow-for-remote-code-execution_2025-044
```

Behavioural rules are generated from public reporting — validate in your environment before deploying.

Source reporting: https://www.cisecurity.org/advisory/a-vulnerability-in-sap-netweaver-visual-composer-could-allow-for-remote-code-execution_2025-044

---

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