Redis Critical Remote Code Execution Vulnerability Discovered after 13 Years
www.infoq.com
Redis recently released a security advisory regarding CVE-2025-49844. This critical (CVSS 10.0) use-after-free (UAF) vulnerability in Lua scripting could allow authenticated attackers to execute remote code on older versions of Redis and Valkey with Lua scripting enabled. Developers are urged to upgrade to patched releases as soon as possible.

Redis recently released a security advisory regarding CVE-2025-49844. This critical (CVSS 10.0) use-after-free (UAF) vulnerability in Lua scripting could allow authenticated attackers to execute remote code on older versions of Redis and Valkey with Lua scripting enabled. Developers are urged to upgrade to patched releases as soon as possible.

The vulnerability exploits a 13-year-old UAF memory corruption bug in Redis, allowing a post-auth attacker to send a crafted Lua script to escape the default Lua sandbox and execute arbitrary native code. This grants full host access, enabling data theft, wiping, encryption, resource hijacking, and lateral movement within cloud environments.

13 years. That’s how long it took to find a critical safety vulnerability in one of the most popular C open source codebases, Redis.