A hacker known as vimpo is running a Minecraft server on a Samsung C410W color laser printer, firmware V3.00.02.20 from December 2015. The entry point is a UDP overflow exploit found by dumping the printer's firmware after gaining serial access through internal debug ports. The server software is UCraft, a lightweight Minecraft implementation vimpo wrote himself, and both the exploit and the server code are public on GitHub.
The path to exploitation was not trivial. Vimpo fed the firmware dump to an LLM to assist with function identification, burning through millions of tokens in the process. The LLM could not finish the job. Human analysis closed the gap. One operational constraint matters: printing and the Minecraft server cannot run simultaneously. Attempting to print crashes the server. The exploit is also tightly hardware-specific, so do not expect to replicate it without the exact same printer and firmware version.
This is vimpo's second entry in this category. He previously ran UCraft on a Wi-Fi light bulb, a build that arguably demanded more from the hardware. The full writeup is worth reading for the firmware analysis methodology alone, specifically how LLM-assisted reverse engineering failed and where manual work became unavoidable. With the ESP32-C3 already claimed by another researcher and a 1960s Univac implementation still holding the impracticality record, the question of what runs next is open.
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