CVE-2025-49844

Severity CVSS v4.0:

Pending analysis

Type:

CWE-416 Use After Free

Publication date:

03/10/2025

Last modified:

12/11/2025

Description

Redis is an open source, in-memory database that persists on disk. Versions 8.2.1 and below allow an authenticated user to use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free and potentially lead to remote code execution. The problem exists in all versions of Redis with Lua scripting. This issue is fixed in version 8.2.2. To workaround this issue without patching the redis-server executable is to prevent users from executing Lua scripts. This can be done using ACL to restrict EVAL and EVALSHA commands.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.90 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

9.90

Severity 3.x

CRITICAL

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:redis:redis::::::::		6.2.20 (excluding)
cpe:2.3:a:redis:redis::::::::	7.0 (including)	7.2.11 (excluding)
cpe:2.3:a:redis:redis::::::::	7.4.0 (including)	7.4.6 (excluding)
cpe:2.3:a:redis:redis::::::::	8.0.0 (including)	8.0.4 (excluding)
cpe:2.3:a:redis:redis::::::::	8.2.0 (including)	8.2.2 (excluding)
cpe:2.3:a:lfprojects:valkey::::::::		7.2.11 (excluding)
cpe:2.3:a:lfprojects:valkey::::::::	8.0.0 (including)	8.0.6 (excluding)
cpe:2.3:a:lfprojects:valkey::::::::	8.1.0 (including)	8.1.4 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2025-49844

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools