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Remote Code Execution Vulnerability in Redis (RediShell) 

Indian – Computer Emergency Response Team (https://www.cert-in.org.in)

Severity Rating: CRITICAL

Software Affected

Redis version 8.2.1 and prior

Overview

A vulnerability has been reported in Redis which could allow a remote attacker to execute arbitrary code on the targeted system.

Target Audience:

Individuals and end-user organizations using affected Redis.

Risk Assessment:

High risk of sensitive data disclosure and system compromise.

Impact Assessment:

Potential for remote code execution and system compromise.

Description

Redis is an open-source, in-memory data structure store used as a high-performance database, cache, and message broker for applications needing rapid data access and processing.

This vulnerability exists in Redis due to a use-after-free memory corruption issue. A remote attacker could exploit this vulnerability by sending a specially crafted Lua script that manipulate the garbage collector and potentially lead to remote code execution.

Successful exploitation of this vulnerability could allow an attacker to gain authenticated access to Redis instance.

Solution

Apply appropriate software updates as mentioned by the vendor:

https://redis.io/blog/security-advisory-cve-2025-49844/

Vendor Information

Redis

https://redis.io/blog/security-advisory-cve-2025-49844/

References

Redis

https://redis.io/blog/security-advisory-cve-2025-49844/

CVE Name

CVE-2025-49844

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Thanks and Regards,

CERT-In

Incident Response Help Desk

e-mail: incident@cert-in.org.in

Phone: +91-11-22902657

Toll Free Number: 1800-11-4949

Toll Free Fax : 1800-11-6969

Web: http://www.cert-in.org.in

PGP Fingerprint: A768 083E 4475 5725 B81A A379 2156 C0C0 B620 D0B4

PGP Key information:

https://www.cert-in.org.in/s2cMainServlet?pageid=CONTACTUS

Postal address:

Indian Computer Emergency Response Team (CERT-In)

Ministry of Electronics and Information Technology

Government of India

Electronics Niketan

6, C.G.O. Complex

New Delhi-110 003

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