CVE-2021-38163
KEVSAP NetWeaver Unrestricted File Upload Vulnerability
Description
SAP NetWeaver contains a vulnerability that allows unrestricted file upload.
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.
CVSS 3.1 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HPublishedSep 14, 2021
Last modifiedJun 17, 2026
Added to KEVJun 9, 2022
Remediation dueJun 30, 2022
References
- launchpad.support.sap.comPermissions Required
- wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=585106405Broken LinkVendor Advisory
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-38163US Government Resource
0 recent articles mention this CVE
83
Risk assessment · Critical
Actively exploited. Patch immediately.
- Exploitation
- Confirmed in the wild (CISA KEV)
- Federal remediation deadline
- Overdue by 1581 days
- CVSS
- 9.9 CRITICAL
- EPSS (30-day exploit probability)
- 36.9% · top 1% of all CVEs
- Weakness
- CWE-22
- Attack vector
- Network, remotely reachable
Recommended actions
- 1.Apply updates per vendor instructions.
- 2.Treat as emergency change: patch or isolate internet-facing instances first.
- 3.Review exposure: confirm which instances are reachable from the internet and restrict access until patched.
- 4.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
Assessment is derived automatically from the live signals above; verify against your own asset inventory.