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CVE-2021-29477

29
FAUCET Score

CVE-2021-29477 is an integer overflow vulnerability in Redis versions 6.0 and newer, affecting products such as fedoraproject and redislabs Redis. This high-severity flaw (CVSS 8.8) allows an authenticated attacker to corrupt the heap via the STRALGO LCS command, potentially leading to remote code execution. While there is no evidence of active exploitation or publicly available exploit code, patching to versions 6.2.3 or 6.0.13, or restricting the STRALGO LCS command via ACL, is recommended. Community discussion and media coverage for this CVE are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.0.0, < 6.0.13CPE matchmatch criteria
cpe:2.3:a:redislabs:redis:*:*:*:*:*:*:*:*
>= 6.2.0, < 6.2.3CPE matchmatch criteria
cpe:2.3:a:redislabs:redis:*:*:*:*:*:*:*:*
33CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
34CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.6
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.03%
Probability of exploitation in next 30 days
EPSS Percentile
89.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0403 is in the 89th percentile among its peer group of 17,823 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 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 (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: redis:6-8040020210512055424.522a0ee4
View patch
redhatno patchvia redhat_api
Product: Red Hat Advanced Cluster Management for Kubernetes 2Fixed in: redisgraph-tls

Vendor Advisories (1)

redhatCVE-2021-29477Important

redis: Integer overflow via STRALGO LCS command

May 4, 2021

References

github.com / redis/redis/security/advisories/GHSA-vqxj-26vj-996g
Third Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/BHWOF7CBVUGDK3AN6H3BN3VNTH2TDUZZ
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/BPWBIZXA67JFIB63W2CNVVILCGIC2ME5
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/EZJ6JGQ2ETZB2DWTQSGCOGG7EF3ILV4V
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/SN7INTZFE34MIQJO7WDDTIY5LIBGN6GI
redis.io
Product
security.gentoo.org / glsa/202107-20
Third Party Advisory