What is CVE-2021-27604?

CVE-2021-27604 is a medium-severity vulnerability in SAP Netweaver Process Integration, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 6.5/10. Published 2021-04-14.

How severe is CVE-2021-27604?

Medium severity. CVSS v3 base score is 6.5 out of 10.

XXE in SAP Netweaver Process Integration

CVE-2021-27604

In order to prevent XML External Entity vulnerability in SAP NetWeaver ABAP Server and ABAP Platform (Process Integration - Enterprise Service Repository JAVA Mappings), versions - 7.10, 7.20, 7.30, 7.31, 7.40, 7.50, SAP recommends to refer this note.

Vulnerability class: XXE (XML External Entity)

Published 2021-04-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.008 (54.7th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 54.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

SAP Netweaver Process Integration — versions 7.10, 7.20, 7.30
SAP Se Process Integration (Enterprise Service Repository Java Mappings) — versions < 7.10, < 7.20, < 7.30

Weakness classification (CWE)

CWE-611 — Improper Restriction of XML External Entity Reference (XXE)

References

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

Frequently asked questions

What is CVE-2021-27604?: CVE-2021-27604 is a medium-severity vulnerability in SAP Netweaver Process Integration, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 6.5/10. Published 2021-04-14.
How severe is CVE-2021-27604?: Medium severity. CVSS v3 base score is 6.5 out of 10.