Since 2020, Microsoft has been keeping Windows 7 alive via paid security updates delivered through Windows 7 ESU SKUs. Unfortunately for Windows 7 users, all of that is ending very soon.
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Windows 7 and Server 2008 R2 extended security updates are bound to cease in 2023 and 2024, respectively. The 0patch team aims to take Microsoft's place in updating these unofficially.
Following the recent Follina security vulnerability, another Microsoft Support Diagnostic Tool (MSDT) bug has been found called "DogWalk". This one too has been ignored by Microsoft at first glance.
An unofficial patch for a Windows LPE security vulnerability under "CVE-2021-34484" is out, one that was supposedly fixed by Microsoft via its Patch Tuesday updates twice, but apparently not.