What is CVE-2021-21484?

CVE-2021-21484 is a critical-severity vulnerability in SAP Hana, classified under Incorrect Authorization. CVSS score: 9.8/10. Published 2021-03-09.

How severe is CVE-2021-21484?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in SAP Hana

CVE-2021-21484

LDAP authentication in SAP HANA Database version 2.0 can be bypassed if the attached LDAP directory server is configured to enable unauthenticated bind.

Vulnerability class: Broken Access Control

Published 2021-03-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.013 (68.2th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 68.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.013 · change: +0.000

Affected products

SAP Hana — versions 2.0
SAP Se Hana — versions < 2.0

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

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-2021-21484?: CVE-2021-21484 is a critical-severity vulnerability in SAP Hana, classified under Incorrect Authorization. CVSS score: 9.8/10. Published 2021-03-09.
How severe is CVE-2021-21484?: Critical severity. CVSS v3 base score is 9.8 out of 10.