WinRAR has a serious security flaw - worrying zero-day issue lets hackers plant malware, so patch right away

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• ESET found a high-severity bug in WinRAR being used by RomCom, a known Russian hacking collective
• The bug was being used to deploy backdoors allowing full access to compromised computers
• WinRAR says it has fixed the issue, so users should update now

Iconic archiving platform WinRAR carried a dangerous zero-day vulnerability which could have let hackers plant malware on compromised computers, security researchers are warning.