In 2020 there were 304 publicly disclosed security defects in iOS of which 94 were severe [1] which means an average of 2 severe defects per week and 859 in And

In 2020 there were 304 publicly disclosed security defects in iOS of which 94 were severe [1] which means an average of 2 severe defects per week and 859 in Android of which 214 were severe which is an average of 4 severe defects per week. These constitute fairly average years (within a factor of 2) so you can reasonably expect that a similar number of defects will be discovered in their currently shipping versions by the end of the year. [1] https://www.cvedetails.com/vulnerability-list.php?vendor_id=49&product_id=15556&version_id=&page=1&hasexp=0&opdos=0&opec=0&opov=0&opcsrf=0&opgpriv=0&opsqli=0&opxss=0&opdirt=0&opmemc=0&ophttprs=0&opbyp=0&opfileinc=0&opginf=0&cvssscoremin=0&cvssscoremax=0&year=2020&month=0&cweid=0&order=3&trc=304&sha=f1112228334f285213ba6575bc7a484d29a781f8 https://www.cvedetails.com/vulnerability-list.php?vendor_id=... [2] https://www.cvedetails.com/vulnerability-list.php?vendor_id=1224&product_id=19997&version_id=&page=5&hasexp=0&opdos=0&opec=0&opov=0&opcsrf=0&opgpriv=0&opsqli=0&opxss=0&opdirt=0&opmemc=0&ophttprs=0&opbyp=0&opfileinc=0&opginf=0&cvssscoremin=0&cvssscoremax=0&year=2020&month=0&cweid=0&order=3&trc=859&sha=8749d8ef5b1dffe9567294e61690771c67a6e7cd https://www.cvedetails.com/vulnerability-list.php?vendor_id=...