What is CVE-2021-20406?

CVE-2021-20406 is a low-severity vulnerability in IBM Security Verify Information Queue, classified under Inadequate Encryption Strength. CVSS score: 2.2/10. Published 2021-02-12.

How severe is CVE-2021-20406?

Low severity. CVSS v3 base score is 2.2 out of 10.

Vulnerability in IBM Security Verify Information Queue

CVE-2021-20406

IBM Security Verify Information Queue 1.0.6 and 1.0.7 uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information. IBM X-Force ID: 196184.

Published 2021-02-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 2.2 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.005 (41.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 41.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.001

Affected products

IBM Security Verify Information Queue — versions 1.0.6, 1.0.7
IBM Security Verify Information Queue — versions 1.0.6, 1.0.7
Linux Kernel

Weakness classification (CWE)

References

www.ibm.com/support/pages/node/6414763 (Patch, Vendor Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/196184 (VDB Entry, vdb-entry, Vendor Advisory)

Frequently asked questions

What is CVE-2021-20406?: CVE-2021-20406 is a low-severity vulnerability in IBM Security Verify Information Queue, classified under Inadequate Encryption Strength. CVSS score: 2.2/10. Published 2021-02-12.
How severe is CVE-2021-20406?: Low severity. CVSS v3 base score is 2.2 out of 10.