CVE-2022-36021

Name: CVE-2022-36021
Creator: NVD / NIST
Published: 2023-03-01T16:15:09.4+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 59.71%

Last modified Jun 17, 2026

CVE-2022-36021 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. Redis is an in-memory database that persists on disk. Authenticated users can use string matching commands (like `SCAN` or `KEYS`) with a specially crafted pattern to trigger a denial-of-service attack on Redis, causing it to hang and consume 100% CPU time. EPSS estimates a 59.71% chance of exploitation in the next 30 days.

Description

Redis is an in-memory database that persists on disk. Authenticated users can use string matching commands (like `SCAN` or `KEYS`) with a specially crafted pattern to trigger a denial-of-service attack on Redis, causing it to hang and consume 100% CPU time. The problem is fixed in Redis versions 6.0.18, 6.2.11, 7.0.9.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

59.71%

99.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Redis	Redis	< 6.0.18
Redis	Redis	>= 6.2.0, < 6.2.11
Redis	Redis	>= 7.0.0, < 7.0.9

References

Timeline

Published: Mar 1, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-36021?

How severe is CVE-2022-36021?

CVE-2022-36021 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 59.71% probability of exploitation in the next 30 days.

How do I fix CVE-2022-36021?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-36021?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST