How severe is CVE-2021-27621?

Medium severity. CVSS v3 base score is 4.9 out of 10.

Is CVE-2021-27621 known to be exploited?

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

Vulnerability in SAP Netweaver Application Server For Java

Q: What is CVE-2021-27621?

CVE-2021-27621 is a medium-severity vulnerability in SAP Netweaver Application Server For Java. CVSS score: 4.9/10. Published 2021-06-09.

CVE-2021-27621

Information Disclosure vulnerability in UserAdmin application in SAP NetWeaver Application Server for Java, versions - 7.11,7.20,7.30,7.31,7.40 and 7.50 allows attackers to access restricted information by entering malicious server name.

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

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.006 (47.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

SAP Netweaver Application Server For Java — versions 7.11, 7.20, 7.30
SAP Se Netweaver As For Java (Useradmin) — versions < 7.11, < 7.20, < 7.30

Public proof-of-concept exploits

n0-traces/cve_

References

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

Frequently asked questions

What is CVE-2021-27621?: CVE-2021-27621 is a medium-severity vulnerability in SAP Netweaver Application Server For Java. CVSS score: 4.9/10. Published 2021-06-09.
How severe is CVE-2021-27621?: Medium severity. CVSS v3 base score is 4.9 out of 10.
Is CVE-2021-27621 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.