CVE-2016-2121

A permissions flaw was found in redis, which sets weak permissions on certain files and...

4.0 MediumFix available

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.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: Low
Integrity: None
Availability: None

Exploit likelihood

0.37%Down 0.5 points since Feb 4, 2022

What each source reports

CVE List Score used 4.0

Record: CVE-2016-2121
CVSS 3.0: 4.0 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-732
Updated: 2026-11-02

EUVDEUVD-2016-3224 4.0

Record: EUVD-2016-3224
CVSS 3.0: 4.0 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated: 2026-11-03

GitHub AdvisoriesGHSA-6837-f96c-5j64 5.5

A permissions flaw was found in redis, which sets weak permissions on certain files and...

Record: GHSA-6837-f96c-5j64
CVSS 3.0: 5.5 MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-732
Updated: 2026-11-02

NVD 4.0

Record: CVE-2016-2121
CVSS 3.0: 4.0 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS 3.0: 5.5 MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0: 2.1 LowAV:L/AC:L/Au:N/C:P/I:N/A:N
Weakness: CWE-732, CWE-264
Updated: 2026-11-02

OSV 5.5

Record: CVE-2016-2121
CVSS 3.0: 5.5 MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Updated: 2026-11-02

OSVDEBIAN-CVE-2016-2121 5.5

Record: DEBIAN-CVE-2016-2121
CVSS 3.0: 5.5 MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Updated: 2026-11-02

OSVRHSA-2017:3226 4.0

Red Hat Security Advisory: redis security update

Record: RHSA-2017:3226
CVSS 3.0: 4.0 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated: 2026-11-02

OSVUBUNTU-CVE-2016-2121 5.5

Record: UBUNTU-CVE-2016-2121
CVSS 3.0: 5.5 MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS 3.0: 4.0 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`redis` Debian:12	before 3:3.2.5-2	3:3.2.5-2
`redis` Debian:13	before 3:3.2.5-2	3:3.2.5-2
`redis` Debian:14	before 3:3.2.5-2	3:3.2.5-2
`redis` Red Hat:openstack:10::el7	before 0:3.0.6-2.el7ost	0:3.0.6-2.el7ost
`redis-debuginfo` Red Hat:openstack:10::el7	before 0:3.0.6-2.el7ost	0:3.0.6-2.el7ost
`redis` Ubuntu:Pro:14.04:LTS	before 2:2.8.4-2ubuntu0.2+esm1, plus listed versions 2:2.6.13-12:2.6.16-32:2.8.0-12:2.8.2-12:2.8.4-22:2.8.4-2ubuntu0.2	2:2.8.4-2ubuntu0.2+esm1
`redis` Ubuntu:16.04:LTS	before 2:3.0.6-1ubuntu0.3, plus listed versions 2:3.0.3-32:3.0.5-12:3.0.5-22:3.0.5-32:3.0.5-42:3.0.6-12:3.0.6-1ubuntu0.2	2:3.0.6-1ubuntu0.3

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases, products	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2016-2121 is a medium vulnerability (CVSS 4.0) in [unknown] Redis, published October 31, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.37%, the 31st percentile. Fixed in redis 3:3.2.5-2.

References

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