CVE-2025-32023

Redis allows out of bounds writes in hyperloglog commands leading to RCE

Published Jul 7, 2025 CVSS 3.1 · 7 High EPSS 6.6% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
Debian DLA Debian DLA DLA-4240-1 redis security update
Debian DSA Debian DSA DSA-5969-1 redis security update
EUVD EUVD EUVD-2025-20233 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.
Ubuntu USN Ubuntu USN USN-8120-1 Redis vulnerability
History
Type Values Removed Values Added
CPEs cpe:2.3:a:redis:redis:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Metrics epss

{'score': 0.00032}

epss

{'score': 0.00041}

Type Values Removed Values Added
Metrics epss

{'score': 0.00029}

epss

{'score': 0.00032}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title Redis allows out of bounds writes in hyperloglog commands leading to RCE
Weaknesses CWE-680
References
Metrics cvssV3_1

{'score': 7, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Feb 4, 2026, 7:26 PM
Reserved
Apr 1, 2025, 9:57 PM
Status
Modified
Published
Jul 7, 2025, 4:15 PM
Modified
Jun 17, 2026, 9:11 AM
Severity
Moderate
Public date
Jul 7, 2025, 3:22 PM