How severe is CVE-2021-21446?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in SAP Netweaver Application Server Abap

Q: What is CVE-2021-21446?

CVE-2021-21446 is a high-severity vulnerability in SAP Netweaver Application Server Abap. CVSS score: 7.5/10. Published 2021-01-12.

CVE-2021-21446

SAP NetWeaver AS ABAP, versions 740, 750, 751, 752, 753, 754, 755, allows an unauthenticated attacker to prevent legitimate users from accessing a service, either by crashing or flooding the service, this has a high impact on the availability of the service.

Published 2021-01-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.014 (72.3th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 72.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

SAP Netweaver Application Server Abap — versions 740, 750, 751
SAP Se Netweaver As Abap — versions < 740, < 750, < 751

References

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

Frequently asked questions

What is CVE-2021-21446?: CVE-2021-21446 is a high-severity vulnerability in SAP Netweaver Application Server Abap. CVSS score: 7.5/10. Published 2021-01-12.
How severe is CVE-2021-21446?: High severity. CVSS v3 base score is 7.5 out of 10.