What is CVE-2021-20569?

CVE-2021-20569 is a medium-severity vulnerability in IBM Security Secret Server, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2021-09-14.

How severe is CVE-2021-20569?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Improper input validation in IBM Security Secret Server

CVE-2021-20569

IBM Security Secret Server up to 11.0 could allow an attacker to enumerate usernames due to improper input validation. IBM X-Force ID: 199243.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2021-09-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.009 (59.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

IBM Security Secret Server — versions 10.0
IBM Security Secret Server
Microsoft Windows

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

www.ibm.com/support/pages/node/6488459 (Vendor Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/199243 (VDB Entry, vdb-entry, Vendor Advisory)

Frequently asked questions

What is CVE-2021-20569?: CVE-2021-20569 is a medium-severity vulnerability in IBM Security Secret Server, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2021-09-14.
How severe is CVE-2021-20569?: Medium severity. CVSS v3 base score is 5.3 out of 10.