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Windows LegacyHive zero-day flaw gets free, unofficial patches
July 20, 2026
Back to all postsA critical zero-day vulnerability, known as the LegacyHive flaw, has been discovered in Windows Operating Systems that could allow hackers to take control of affected systems. This issue affects older versions of Windows, including Windows XP, Server 2003, and some versions up to Windows 10. The exploitation of this vulnerability could potentially bypass Microsoft's security measures, putting many businesses at risk. Although Microsoft is yet to release an official patch for this flaw, independent security researchers have developed free, unofficial patches that can be applied to mitigate the threat. It's essential for Canadian SMB owners and IT managers to prioritize updates and implement these patches, as it is estimated that around 10% of businesses worldwide are still using vulnerable Windows versions.
Source: BleepingComputer
Windowszero-day flawcybersecuritypatchesSMB
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