What is CVE-2021-33690?

CVE-2021-33690 is a critical-severity vulnerability in SAP Netweaver Development Infrastructure, classified under Server-Side Request Forgery (SSRF). CVSS score: 9.9/10. Published 2021-09-15.

How severe is CVE-2021-33690?

Critical severity. CVSS v3 base score is 9.9 out of 10.

Is CVE-2021-33690 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

SSRF in SAP Netweaver Development Infrastructure

CVE-2021-33690

Server-Side Request Forgery (SSRF) vulnerability has been detected in the SAP NetWeaver Development Infrastructure Component Build Service versions - 7.11, 7.20, 7.30, 7.31, 7.40, 7.50The SAP NetWeaver Development Infrastructure Component Build Service allows a threat actor who has access to the server to perform proxy attacks on server by sending crafted queries. Due to this, the threat actor could completely compromise sensitive data residing on the Server and impact its availability.Note: The impact of this vulnerability depends on whether SAP NetWeaver Development Infrastructure (NWDI) runs on the intranet or internet. The CVSS score reflects the impact considering the worst-case scenario that it runs on the internet.

Vulnerability class: SSRF (Server-Side Request Forgery)

Published 2021-09-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.691 (99.3th percentile), scored 2026-10-18.

High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.691 · newest: 0.691 · change: 0.000

Affected products

SAP Netweaver Development Infrastructure — versions 7.11, 7.20, 7.30
SAP Se Netweaver Development Infrastructure (Component Build Service) — versions < 7.11, < 7.20, < 7.30

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

Public proof-of-concept exploits

redrays-io/CVE-2021-33690

References

wiki.scn.sap.com/wiki/pages/viewpage.action (Patch, Vendor Advisory)
launchpad.support.sap.com/ (Permissions Required)

Frequently asked questions

What is CVE-2021-33690?: CVE-2021-33690 is a critical-severity vulnerability in SAP Netweaver Development Infrastructure, classified under Server-Side Request Forgery (SSRF). CVSS score: 9.9/10. Published 2021-09-15.
How severe is CVE-2021-33690?: Critical severity. CVSS v3 base score is 9.9 out of 10.
Is CVE-2021-33690 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.