Two zero-day vulnerabilities affecting iPhone and iPad devices were found by cybersecurity startup ZecOps. The attacks use an Out-of-bounds Write (OOB Write) and a Remote Heap Overflow (R-Overflow) vulnerability. Apple has already included a patch for the zero-days in iOS 13.4.5 beta 2 released on April 15, with a security fix to be made available for users of stable iOS versions soon. All iPhones and iPad iOS 6 or above are vulnerable to attacks.
Source: https://www.bleepingcomputer.com/news/security/new-ios-zero-days-actively-used-against-high-profile-targets/