No exploitation reportedFix available

CVE-2022-36021

Q: Is CVE-2022-36021 actively exploited?

Active exploitation of CVE-2022-36021 has not been confirmed. Its EPSS score was 59.8% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2022-36021?

CVE-2022-36021 has a CVSS v3 base score of 5.5 (MEDIUM severity), with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

No exploitation reported by the sources we read.

Published2023-03-01
Fixed in7.0.9 · 6.2.11 · 6.0.18
WeaknessCWE-407

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC

2023-03-0116:15CVE publishedNVD
2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2022-36021?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2022-36021?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Redis

Branch	Affected	Fixed in	Source
7.0	≥ 7.0.0, < 7.0.9	7.0.9	NVD
6.2	≥ 6.2.0, < 6.2.11	6.2.11	NVD
6.0	< 6.0.18	6.0.18	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Redis to 7.0.9 · 6.2.11 · 6.0.18

Advisories and patches

github.comPatch
github.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2025-03-07
OpenCVESSVC decisionnone—
CNACVSS 3.15.5read 2026-10-23
NVDCVSS 3.15.5read 2026-10-23
CNAweakness (CWE)CWE-407read 2026-10-23
NVDweakness (CWE)CWE-407read 2026-10-23
FIRST EPSSEPSS score59.8 %read 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Published: 2023-03-01
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2022-36021?

Is CVE-2022-36021 actively exploited?

Active exploitation of CVE-2022-36021 has not been confirmed. Its EPSS score was 59.8% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-36021?

CVE-2022-36021 has a CVSS v3 base score of 5.5 (MEDIUM severity), with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

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