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Re:Researcher Discloses Critical Flaws Affecting Millions of... by yorwba on Saturday February 08, 2020 @02:04PM (#22277649)
The link to the PoC is the same as for this submission: https://news.ycombinator.com/item?id=22251329

Same vulnerability. The reason HiSilicon couldn't provide the fix is that they didn't write the firmware running on those devices, Xiongmai did. This information was added as an update to the original writeup.

Re:Researcher Discloses Critical Flaws Affecting Millions of... by fisherjeff on Saturday February 08, 2020 @02:10PM (#22277694)
More interesting info on Xiongmai if anyone’s unfamiliar:

https://krebsonsecurity.com/2018/10/naming-shaming-web-pollu...