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Fencer Intel
medium 4.0

CVE-2016-2121 json

A permissions flaw was found in redis, which sets weak permissions on certain files and directories that could potentially contain sensitiv…

published 2018-10-31 8 y ago modified 2026-06-17 4 mo ago also EUVD-2016-3224

cvss
4.0
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 31%
public exploits
0
none known

Summary

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.

Patch / fix

  • redis Debian 14, Debian 13, Debian 12 3:3.2.5-2

debian advisories DEBIAN-CVE-2016-2121

  • redis Ubuntu 16.04 LTS 2:3.0.6-1ubuntu0.3
  • redis Ubuntu Pro 14.04 LTS 2:2.8.4-2ubuntu0.2+esm1

ubuntu advisories UBUNTU-CVE-2016-2121

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • redis openstack 10 3.0.6-2.el7ost

red hat advisories RHSA-2017:3226

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2016-2121 updated cvss 4.0

redis: weak permissions on sensitive files

  • Red Hat Enterprise Linux OpenStack Platform 6 (Juno) redis Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) redis Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) Operational Tools redis Red Hat OpenStack Platform 8 (Liberty) redis Red Hat OpenStack Platform 8 (Liberty) Operational Tools redis Red Hat OpenStack Platform 9 (Mitaka) redis
    +1 more products
    Red Hat OpenStack Platform 9 (Mitaka) Operational Tools redis
    affected: no fix planned “Will not fix”
  • Red Hat OpenStack Platform 10.0 redis 3.0.6-2.el7ost
    fixed: vendor fix RHSA-2017:3226
  • Red Hat Software Collections rh-redis32-redis
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.37% chance of exploitation in the next 30 days, higher than 31% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.0 4.0 CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD 3.0 5.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:P/I:N/A:N

Affected products

  • [UNKNOWN] redis

Classification

Weakness
  • CWE-732 Incorrect Permission Assignment for Critical Resource
  • CWE-264 Permissions, Privileges, and Access Controls

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.