The bug is under attack. Within hours of the patch release, a researcher published POC code, calling it a “great” flaw that can be used for jailbreaks and local privilege escalation.
https://threatpost.com/apple-urgent-ios-updates-zero-day/175419/
Windows Zero-Day Actively Exploited in Widespread Espionage Campaign
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The cyberattacks, linked to a Chinese-speaking APT, deliver the new MysterySnail RAT malware to Windows servers.
https://threatpost.com/windows-zero-day-exploited-espionage/175432/