---
id: "CVE-2021-38163"
kind: "vulnerability"
aliases: ["CVE-2021-38163"]
title: "SAP NetWeaver (Visual Composer 7.0 RT) versions - 7.30, 7.31, 7.40, 7.50, without restriction, an attacker\u2026"
severity: "critical"
cvss: 9.9
epss: 0.36898
exploited: true
status: "open"
category: "package"
products: [{"name": "SAP NetWeaver", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "sap netweaver", "fixed": [], "affected": "= 7.30", "ecosystem": "vendor"}, {"name": "sap netweaver", "fixed": [], "affected": "= 7.31", "ecosystem": "vendor"}, {"name": "sap netweaver", "fixed": [], "affected": "= 7.40", "ecosystem": "vendor"}, {"name": "sap netweaver", "fixed": [], "affected": "= 7.50", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["exploited", "netweaver", "package", "sap", "self-hosted"]
not_affected_if: ["managed-hosting"]
published_at: "2021-09-14T12:15:10+00:00"
first_seen_at: "2026-10-23T19:11:52+00:00"
updated_at: "2026-10-23T22:29:04+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2021-38163", "first_seen_at": "2026-10-23T19:11:52+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2021-38163", "first_seen_at": "2026-10-23T19:13:45+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-38163", "first_seen_at": "2026-10-23T22:29:04+00:00"}]
---

# SAP NetWeaver (Visual Composer 7.0 RT) versions - 7.30, 7.31, 7.40, 7.50, without restriction, an attacker…

SAP NetWeaver has an unrestricted file upload flaw that lets an attacker upload arbitrary files to the server. CISA lists it as actively exploited in the wild.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:SAP NetWeaver affected ? fixed ?
- vendor:sap netweaver affected = 7.30 fixed ?
- vendor:sap netweaver affected = 7.31 fixed ?
- vendor:sap netweaver affected = 7.40 fixed ?
- vendor:sap netweaver affected = 7.50 fixed ?

## Fix

Apply the SAP security updates for CVE-2021-38163 per the vendor instructions (CISA required action); exact patch level is unknown from the sources.

## Timeline

- 2026-10-23T19:11:52+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2021-38163
- 2026-10-23T19:13:45+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2021-38163
- 2026-10-23T22:29:04+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2021-38163

## From the sources

SAP NetWeaver (Visual Composer 7.0 RT) versions - 7.30, 7.31, 7.40, 7.50, without restriction, an attacker authenticated as a non-administrative user can upload a malicious file over a network and trigger its processing, which is capable of running operating system commands with the privilege of the Java Server process. These commands can be used to read or modify any information on the server or shut the server down making it unavailable.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_