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CVE-2021-32672

19
FAUCET Score

CVE-2021-32672 is a medium-severity vulnerability affecting Redis versions 3.2 and newer with Lua debugging enabled, as well as various distributions like Debian and Red Hat. It allows authenticated attackers to send malformed requests to the Lua debugger, leading to out-of-bounds read issues. While the CVSS score is 4.3 (medium), indicating low impact on confidentiality and no impact on integrity or availability, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this flaw.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.2.0, < 5.0.14CPE matchmatch criteria
cpe:2.3:a:redis:redis:*:*:*:*:*:*:*:*
>= 6.0.0, < 6.0.16CPE matchmatch criteria
cpe:2.3:a:redis:redis:*:*:*:*:*:*:*:*
>= 6.2.0, < 6.2.6CPE matchmatch criteria
cpe:2.3:a:redis:redis:*:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:redhat:software_collections:-:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.6
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.83%
Probability of exploitation in next 30 days
EPSS Percentile
76.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0183 is in the 88th percentile among its peer group of 21,977 CVEs.

Social Chatter

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

Remediation

Patch Available

Vendor Patches (11)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: cm1 redis 5.0.14-1 on CBL Mariner 1.0Fixed in: 5.0.14-1
microsoftpatch availablevia msrc
Product: 18985-16820Fixed in: 5.0.14-1
microsoftpatch availablevia msrc
Product: 18986-16823Fixed in: 6.2.6-1
microsoftpatch availablevia msrc
Product: cbl2 redis 6.2.6-1 on CBL Mariner 2.0Fixed in: 6.2.6-1
oraclepatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Advanced Cluster Management for Kubernetes 2.3 for RHEL 8Fixed in: rhacm2/redisgraph-tls-rhel8:v2.3.3-3
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: redis:6/redis
redhatvendor investigatingvia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-redis5-redis
redhatvendor investigatingvia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-redis6-redis
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: redis:5/redis

Vendor Advisories (2)

microsoft2021-Oct/CVE-2021-32672Moderate

Vulnerability in Lua Debugger in Redis

Oct 12, 2021
redhatCVE-2021-32672Low

redis: Out of bounds read in lua debugger protocol parser

Oct 4, 2021

References

github.com / redis/redis/commit/6ac3c0b7abd35f37201ed2d6298ecef4ea1ae1dd
PatchThird Party Advisory
github.com / redis/redis/security/advisories/GHSA-9mj9-xx53-qmxm
Third Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/HTYQ5ZF37HNGTZWVNJD3VXP7I6MEEF42
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/VL5KXFN3ATM7IIM7Q4O4PWTSRGZ5744Z
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/WR5WKJWXD4D6S3DJCZ56V74ESLTDQRAB
security.gentoo.org / glsa/202209-17
Third Party Advisory
security.netapp.com / advisory/ntap-20211104-0003
Third Party Advisory
debian.org / security/2021/dsa-5001
Third Party Advisory
oracle.com / security-alerts/cpuapr2022.html
PatchThird Party Advisory