Apple has released new security updates for MacOS, iOS, iPadOS and watch OS that plug four additional zero-days that ‘may have been actively exploited’ Apple has not shared specific details about the fixed flaws or explained in which attacks they are being exploited. Users advised to update their Apple devices as soon as possible. Three of the four fixed vulnerabilities have been flagged by researchers from Beijing-based security firm Qihoo 360, the remaining one by an anonymous researcher. WatchOS 7.4.1 fixes only the first of those security holes (CVE-2021-30665), while iOS 12.5.3 fixes both.
Source: https://www.helpnetsecurity.com/2021/05/04/apple-fixes-zero-days/