Advisory Details

October 6th, 2025

(Pwn2Own) Redis Lua Use-After-Free Remote Code Execution Vulnerability

CVE ID	CVE-2025-49844
CVSS SCORE	9.8, AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS	Redis
AFFECTED PRODUCTS	Redis
VULNERABILITY DETAILS	This vulnerability allows remote attackers to execute arbitrary code on affected installations of Redis. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of certain string values by the embedded Lua interpreter. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the service account.
ADDITIONAL DETAILS	Redis has issued an update to correct this vulnerability. More details can be found at: https://github.com/redis/redis/security/advisories/GHSA-4789-qfc9-5f9q
DISCLOSURE TIMELINE	2025-06-05 - Vulnerability reported to vendor 2025-10-06 - Coordinated public release of advisory 2025-10-06 - Advisory Updated
CREDIT	Benny Isaacs, Nir Brakha, Sagi Tzadik (@sagitz_)

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