CVE-2025-62507 is a significant stack buffer overflow vulnerability in Redis, fixed in version 8.3.2. Rated with a CVSS v3 score of 8.8, it allows remote code execution through the XACKDEL command when a user submits multiple message IDs. Although Redis requires authentication by default, the vulnerability could be exploited without it, making it a serious security risk. The flaw lies in the xackdelCommand function, which processes user-supplied stream IDs. When the number of IDs exceeds the stack-allocated array size, it leads to a buffer overflow. This overflow can overwrite critical data in memory, including the function’s return address, allowing an attacker to gain control over the process. The Redis maintainers have added regression tests to prevent this issue, but the article illustrates the ease of exploiting the vulnerability using specific Redis commands. Testing this vulnerability involves running a Redis server and executing a sequence of commands that include the XACKDEL command with an excessive number of IDs. The article provides a detailed step-by-step guide to replicate the exploit, demonstrating that adding just a few more IDs beyond the buffer limit can crash the server. This crash reveals attempts to execute code from the Redis binary, indicating that the exploit can lead to remote code execution.