What is CVE-2020-4687?

CVE-2020-4687 is a medium-severity vulnerability in IBM Aix. CVSS score: 4.3/10. Published 2020-08-20.

How severe is CVE-2020-4687?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in IBM Aix

CVE-2020-4687

IBM Content Navigator 3.0.7 and 3.0.8 could allow an authenticated user to view cached content of another user that they should not have access to. IBM X-Force ID: 186679.

Published 2020-08-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.010 (62.9th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 62.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

IBM Aix
IBM Content Navigator — versions 3.0.7, 3.0.8
IBM Content Navigator — versions 3.0.0, 3.0.7, 3.0.8
Linux Kernel
Microsoft Windows

References

www.ibm.com/support/pages/node/6262423 (Vendor Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/186679 (VDB Entry, vdb-entry, Vendor Advisory)

Frequently asked questions

What is CVE-2020-4687?: CVE-2020-4687 is a medium-severity vulnerability in IBM Aix. CVSS score: 4.3/10. Published 2020-08-20.
How severe is CVE-2020-4687?: Medium severity. CVSS v3 base score is 4.3 out of 10.