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Redis CVE-2025-32023

| EUVDEUVD-2025-20233 HIGH
Integer Overflow to Buffer Overflow (CWE-680)
2025-07-07 security-advisories@github.com
7.0
CVSS 3.1 · GitHub Advisory
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Severity by source

GitHub Advisory PRIMARY
7.0 HIGH
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Ubuntu
MEDIUM
qualitative
SUSE
7.8 HIGH
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Red Hat
8.8 HIGH
qualitative

Primary rating from GitHub Advisory.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

5
EUVD ID Assigned
Mar 16, 2026 - 03:37 euvd
EUVD-2025-20233
Analysis Generated
Mar 16, 2026 - 03:37 vuln.today
Patch released
Mar 16, 2026 - 03:37 nvd
Patch available
PoC Detected
Feb 04, 2026 - 20:16 vuln.today
Public exploit code
CVE Published
Jul 07, 2025 - 16:15 nvd
HIGH 7.0

DescriptionGitHub Advisory

Redis is an open source, in-memory database that persists on disk. From 2.8 to before 8.0.3, 7.4.5, 7.2.10, and 6.2.19, an authenticated user may use a specially crafted string to trigger a stack/heap out of bounds write on hyperloglog operations, potentially leading to remote code execution. The bug likely affects all Redis versions with hyperloglog operations implemented. This vulnerability is fixed in 8.0.3, 7.4.5, 7.2.10, and 6.2.19. An additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from executing hyperloglog operations. This can be done using ACL to restrict HLL commands.

Analysis

Redis is an open source, in-memory database that persists on disk. From 2.8 to before 8.0.3, 7.4.5, 7.2.10, and 6.2.19, an authenticated user may use a specially crafted string to trigger a stack/heap out of bounds write on hyperloglog operations, potentially leading to remote code execution. The bug likely affects all Redis versions with hyperloglog operations implemented. This vulnerability is fixed in 8.0.3, 7.4.5, 7.2.10, and 6.2.19. An additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from executing hyperloglog operations. This can be done using ACL to restrict HLL commands.

Technical ContextAI

An out-of-bounds memory access occurs when code reads from or writes to memory locations outside the intended buffer boundaries.

RemediationAI

A vendor patch is available — apply it immediately. Implement proper bounds checking on all array and buffer accesses. Use memory-safe languages or static analysis tools to detect OOB issues.

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Vendor StatusVendor

Ubuntu

Priority: Medium
redict
Release Status Version
jammy DNE -
noble DNE -
upstream needs-triage -
oracular ignored end of life, was needs-triage
plucky ignored end of life, was needs-triage
questing needs-triage -
valkey
Release Status Version
jammy DNE -
noble needs-triage -
upstream needs-triage -
oracular ignored end of life, was needs-triage
plucky ignored end of life, was needs-triage
questing needs-triage -
redis
Release Status Version
oracular ignored end of life, was needs-triage
bionic needed -
focal needed -
jammy needed -
noble needed -
questing needed -
trusty needed -
upstream released 8.0.3, 7.4.5, 7.2.10, 6.2.19
xenial needed -
plucky ignored end of life, was needed

Debian

Bug #1108977
redict
Release Status Fixed Version Urgency
forky, sid fixed 7.3.6+ds-1 -
(unstable) fixed 7.3.5+ds-1 -
redis
Release Status Fixed Version Urgency
bullseye fixed 5:6.0.16-1+deb11u7 -
bullseye (security) fixed 5:6.0.16-1+deb11u8 -
bookworm, bookworm (security) fixed 5:7.0.15-1~deb12u6 -
trixie (security), trixie fixed 5:8.0.2-3+deb13u1 -
forky, sid fixed 5:8.0.5-1 -
bookworm fixed 5:7.0.15-1~deb12u5 -
(unstable) fixed 5:8.0.2-2 -
valkey
Release Status Fixed Version Urgency
trixie (security), trixie fixed 8.1.1+dfsg1-3+deb13u1 -
forky, sid fixed 8.1.4+dfsg1-1 -
(unstable) fixed 8.1.1+dfsg1-3 -

SUSE

Severity: High
Product Status
SUSE Enterprise Storage 7.1 Fixed
SUSE Liberty Linux 8 Fixed
SUSE Liberty Linux 9 Fixed
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS Fixed
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS Fixed

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CVE-2025-32023 vulnerability details – vuln.today

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