CVE-2025-46818 Scanner

Redis is a widely used open-source, in-memory data structure store often employed as a database, cache, and message broker. It is popular for high-performance applications because of its speed, support for various data structures, and built-in replication capabilities. Systems that require fast data access and real-time analytics frequently leverage Redis in their architecture. It is used in numerous web applications, gaming platforms, and IoT implementations for efficient data processing. Companies across industries adopt Redis for reliable and scalable storage solutions with minimal overhead. Redis excels in scenarios requiring rapid, simultaneous access to large data volumes.

The Remote Code Execution (RCE) vulnerability detected in Redis arises from a flaw in its Lua scripting feature. This flaw allows authenticated users to craft specific Lua scripts that can manipulate different Lua objects, leading to unauthorized code execution. The vulnerability affects all Redis versions using Lua scripting before version 8.2.2. If exploited, attackers could potentially execute code in the context of others, escalating privileges or tampering with sensitive information. It poses a significant security risk, primarily when Redis is deployed in environments where user access is shared. Redis administrators are advised to update promptly to secure their instances.

Technical analysis of the vulnerability indicates that the Lua sandbox within Redis does not sufficiently constrain script execution, allowing cross-user escape. An authenticated user can exploit this weakness by sending a specially crafted script containing manipulative Lua commands to the Redis server. This script can break the intended code execution barriers, granting execution privileges in other user contexts. The flaw is present in the EVAL and FUNCTION command families, making them critical vectors for potential exploitation. Administrators need to restrict these commands using ACLs until updates are applied to mitigate the risk.

Exploiting this vulnerability could lead to severe consequences, including unauthorized access, data tampering, and potential server takeover. Attacked systems might experience data breaches, where attackers can read, modify, or delete sensitive information. Unauthorized code execution can also lead to installing malware, further compromising the system. Such breaches could result in significant operational disruptions, financial losses, and damage to organizational reputation.

REFERENCES

• https://github.com/dwisiswant0/CVE-2025-46818