CVE-2021-38163Known exploitationNetwork attack vector

Authenticated command execution via unrestricted file upload

Published Sep 14, 2021 · Updated Oct 21, 2025

Unrestricted file upload in SAP NetWeaver Visual Composer 7.30, 7.31, 7.40, and 7.50 allows remote authenticated users to run OS commands. The EP-VC-RTM runtime accepts a malicious uploaded file without restriction and processes it with the privileges of the Java Server process. Non-administrative access is sufficient to read or modify server information or shut down the server.

CVSS severity9.9
Critical
EPSS probability36.02%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in SAP NetWeaver Visual Composer 7.30, 7.31, 7.40, and 7.50 allows remote authenticated users to run OS commands. The EP-VC-RTM runtime accepts a malicious uploaded file without restriction and processes it with the privileges of the Java Server process. Non-administrative access is sufficient to read or modify server information or shut down the server.

The record

CVE
CVE-2021-38163
Published
Sep 14, 2021
Updated
Oct 21, 2025
Vendor
SAP SE
Product
SAP NetWeaver Visual Composer development server
Classifications
CWE-22, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 14, 2021CVE publishedPublication date reported by the CVE source.
  2. Oct 21, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=7.30
  2. Affected versionversion=7.31
  3. Affected versionversion=7.40
  4. Affected versionversion=7.50

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

SAP SE · SAP NetWeaver Visual Composer development serverversion=7.30; version=7.31; version=7.40; version=7.50

Published CVSS scores

9.9SAP SECVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.0NIST NVDAV:N/AC:L/Au:S/C:C/I:C/A:C

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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