CVE-2021-3470

MEDIUM
5.3
CVSS Score
Published: March 31, 2021 at 01:44 PM UTC
Updated: June 17, 2026 at 04:05 AM UTC
1 product affected across 1 vendorRedis

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Severity
MEDIUM5.3
Exploit prediction
EPSS 1%

Description

A heap overflow issue was found in Redis in versions before 5.0.10, before 6.0.9 and before 6.2.0 when using a heap allocator other than jemalloc or glibc's malloc, leading to potential out of bound write or process crash. Effectively this flaw does not affect the vast majority of users, who use jemalloc or glibc malloc.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 5.0.106.0.0 ≤ v < 6.0.95.0.106.0.96.2.0 rc16.2.0 rc26.2.0 rc3
Affected range stops below 5.0.10, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.0.9, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

x_refsource_MISCIssue TrackingPatchThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1943623

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-119CWE-787

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