GermanyThe Chaos Computer Club (CCC) discovered security vulnerabilities in the proprietary DTU protocol used by Hoymiles inverters earlier this year. These vulnerabilities allowed attackers to access inverters without authentication, potentially enabling unauthorized firmware changes. In response, Hoymiles released firmware updates for several inverter models, including the HM series and HMS/HMT ranges. Customers using the Hoymiles Cloud account received automatic upgrades through their apps or web portals. Those without cloud accounts were instructed to fill out a form in the self-service center, after which customer support would assist with the update. However, third-party tools like OpenDTU and AhoyDTU may no longer function properly after the update. The company did not clarify whether future compatibility with these tools could be restored.
Bias read (Center): The article focuses on technical details of a cybersecurity issue and the corresponding firmware updates provided by Hoymiles. There is no political framing, bias, or mention of political entities, policies, or officials. The content remains strictly technical and neutral.
