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CVE-2022-36021

50
FAUCET Score

CVE-2022-36021 is a denial-of-service vulnerability affecting Redis versions prior to 6.0.18, 6.2.11, and 7.0.9. Authenticated users can exploit this by using specially crafted patterns with string matching commands (e.g., SCAN, KEYS), causing Redis to consume 100% CPU and hang. With a CVSS score of 5.5 (Medium), this local attack requires low privileges and has a high impact on availability. There is no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed in CISA's KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
< 6.0.18CPE matchmatch criteria
cpe:2.3:a:redis:redis:*:*:*:*:*:*:*:*
>= 6.2.0, < 6.2.11CPE matchmatch criteria
cpe:2.3:a:redis:redis:*:*:*:*:*:*:*:*
>= 7.0.0, < 7.0.9CPE matchmatch criteria
cpe:2.3:a:redis:redis:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
59.71%
Probability of exploitation in next 30 days
EPSS Percentile
99.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.5971 is in the 100th percentile among its peer group of 15,938 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: cm1 redis 6.2.11-1 on CBL Mariner 1.0Fixed in: 6.2.11-1
microsoftpatch availablevia msrc
Product: cbl2 redis 6.2.11-1 on CBL Mariner 2.0Fixed in: 6.2.11-1
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: redis:6-8100020250113083959.489197e6
View patch
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-redis6-redis

Vendor Advisories (2)

microsoft2023-Mar/CVE-2022-36021Moderate

Redis string pattern matching can be abused to achieve Denial of Service

Mar 14, 2023
redhatCVE-2022-36021Moderate

redis: Specially crafted SRANDMEMBER, ZRANDMEMBER, and HRANDFIELD commands can trigger an integer overflow

Feb 28, 2023

References

github.com / redis/redis/commit/dcbfcb916ca1a269b3feef86ee86835294758f84
Patch
github.com / redis/redis/security/advisories/GHSA-jr7j-rfj5-8xqv
Vendor Advisory