GoKawiilResearcher finds 23 security flaws, including RCE, in Prusa MK4S firmware
Freelance engineer Yannick Dixken spent a week probing his Prusa MK4S 3D printer and uncovered 14 findings comprising roughly 23 individual defects, including a remote code execution vulnerability in the Prusa Connect management platform rated 8.1 (High Severity). He demonstrated the exploit by Rickrolling the printer via RCE, and disclosed all issues to Prusa, which has patched them in Buddy firmware versions above 7.0.0.
GoKawiil's interpretation of the reporting above, not reported fact.
The disclosure highlights how networked hardware like 3D printers can carry serious remote-exploit risks comparable to those found in traditional software systems. Dixken suggests many bugs stemmed from developers relying on assert statements rather than robust input validation, which could point to broader gaps in embedded device security practices. The coordinated, responsible disclosure and prompt patching also show how independent security research can improve consumer IoT safety.
- A security researcher found 23 individual defects across 14 findings in Prusa MK4S firmware, including a High Severity RCE flaw.
- The vulnerability was demonstrated by remotely Rickrolling the printer, with proof-of-concept shared directly with Prusa.
- Prusa has patched all identified issues in Buddy firmware versions above 7.0.0 following responsible disclosure.
Original Prusa MK4S 3D Printer — This is the very printer at the center of the research—an excellent, highly regarded machine for makers who want precision prints and open firmware they can tinker with. Now that Prusa has patched the Buddy firmware vulnerabilities found in this story, it's a great time to pick one up and explore its capabilities safely.
See Original Prusa MK4S 3D Printer on Amazon → Affiliate link — we may earn a commission on purchases, at no extra cost to you. Product picked by AI based on this article; it is not a tested recommendation.Source: tomshardware.com — Mark Tyson, 2026-11-10
Published there as: “Software engineer Rickrolls his Prusa 3D printer via remote code execution exploit”
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