cybersecurityzero-dayWindowsvulnerabilityMSP
New Windows LegacyHive zero-day gives hackers admin privileges
July 16, 2026
Back to all postsA new zero-day vulnerability, known as LegacyHive, has been discovered in Microsoft's Windows operating system. This security flaw affects all versions of Windows and allows attackers to gain administrative privileges by exploiting a vulnerability in the way Windows reads and writes data to the registry. This vulnerability can be exploited remotely without user interaction, making it particularly dangerous for businesses. The LegacyHive zero-day is being actively used in targeted attacks, posing a significant risk to Canadian businesses as it can lead to data theft, ransomware attacks, and system compromise. To mitigate this threat, businesses should ensure their Windows systems are updated with the latest security patches released by Microsoft on February 8th, 2023, and consider implementing multi-factor authentication and regular security audits.
Source: BleepingComputer
cybersecurityzero-dayWindowsvulnerabilityMSP
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