Home/CVE/Redis is an in-memory database that persists on disk. Authenticated users can use string matching commands (like `SCAN`
CVE

CVE-2022-36021

Redis is an in-memory database that persists on disk. Authenticated users can use string matching commands (like `SCAN`

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.

MEDIUM · CVSS 5.5 EPSS 0.60647
Act now
  • EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
  • EPSS percentile: top 2% of all CVEs by exploitation likelihood
Sigma rules1 YARA rules0
⬡

Weakness Classification

CWE-407Inefficient Algorithmic Complexity
CWE-407Inefficient Algorithmic Complexity
▤

Affected Products & Versions

3
redis< 6.0.18
redis>= 6.2.0 and < 6.2.11
redis>= 7.0.0 and < 7.0.9
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighOpenCanary - REDIS Action Command Attempt
▣

Scoring & Timeline

5.5
MEDIUM · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD01 Mar 2023 · 04:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

10
rhsaRHSA-2025:0595Important
suse-csafopenSUSE-SU-2024:12743-1
siemens-csafSSA-806742
usnUSN-6531-1
suse-csafSUSE-SU-2023:2925-1
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/redis/redis/commit/dcbfcb916ca1a269b3feef86ee86835294758f84Patch
https://github.com/redis/redis/security/advisories/GHSA-jr7j-rfj5-8xqvVendor Advisory
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