Unpatchable 0-day in surveillance cam is being exploited to install Mirai

A zero-day (also known as zero-hour or 0-day) vulnerability is an undisclosed computer application vulnerability that could be exploited to adversely affect the computer programs, data, additional computers or a network. It is known as a „zero-day” because once the flaw becomes known, the application author has zero days in which to plan and advise any mitigation against its exploitation (by, for example, advising workarounds or issuing patches). Attacks employing zero-day exploits are often attempted before or on the day that notice of the vulnerability is released to the public; sometimes before the author is aware or has developed and made available corrected code. Zero-day attacks are a severe threat.