CVE-2025-46819
Redis is vulnerable to DoS via specially crafted LUA scripts
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 read out-of-bound data or crash the server and subsequent denial of service. 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 block a script by restricting both the EVAL and FUNCTION command families.
INFO
Published Date :
Oct. 3, 2025, 7:15 p.m.
Last Modified :
Oct. 6, 2025, 2:56 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update Redis to version 8.2.2 or newer.
- Restrict EVAL and FUNCTION commands using ACL.
- Prevent users from executing Lua scripts.
Public PoC/Exploit Available at Github
CVE-2025-46819 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-46819.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-46819 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-46819
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
CVE-2025-46819 – Redis Lua Long-String Delimiter Out-of-Bounds Read
Lua
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-46819 vulnerability anywhere in the article.
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Daily CyberSecurity
Critical Flaw CVE-2025-49844 (CVSS 10.0) Allows Remote Code Execution in Redis
Redis, the popular open-source in-memory data store widely used for real-time analytics, caching, and message brokering, has released multiple patches addressing four security vulnerabilities that cou ... Read more
The following table lists the changes that have been made to the
CVE-2025-46819 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
Oct. 03, 2025
Action Type Old Value New Value Added 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 read out-of-bound data or crash the server and subsequent denial of service. 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 block a script by restricting both the EVAL and FUNCTION command families. Added CVSS V3.1 AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H Added CWE CWE-190 Added Reference https://github.com/redis/redis/commit/3a1624da2449ac3dbfc4bdaed43adf77a0b7bfba Added Reference https://github.com/redis/redis/releases/tag/8.2.2 Added Reference https://github.com/redis/redis/security/advisories/GHSA-4c68-q8q8-3g4f