What is CVE-2016-2121?

CVE-2016-2121 is a medium-severity vulnerability in [Unknown] Redis, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 4.0/10. Published 2018-10-31.

How severe is CVE-2016-2121?

Medium severity. CVSS v3 base score is 4.0 out of 10.

Vulnerability in [Unknown] Redis

CVE-2016-2121

A permissions flaw was found in redis, which sets weak permissions on certain files and directories that could potentially contain sensitive information. A local, unprivileged user could possibly use this flaw to access unauthorized system information.

Published 2018-10-31 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (28.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 28.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

[Unknown] Redis
Red Hat OpenStack — versions 10

Weakness classification (CWE)

References

access.redhat.com/errata/RHSA-2017:3226 (vendor-advisory, Third Party Advisory)
bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
www.securityfocus.com/bid/94111 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2016-2121?: CVE-2016-2121 is a medium-severity vulnerability in [Unknown] Redis, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 4.0/10. Published 2018-10-31.
How severe is CVE-2016-2121?: Medium severity. CVSS v3 base score is 4.0 out of 10.