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Patch now! Emergency fix for PrintNightmare released by Microsoft

July 7, 2021

Last week we wrote about PrintNightmare, a vulnerability that was supposed to be patched but wasn’t. After June’s Patch Tuesday, researchers found that the patch did not work in every case, most notably on modern domain controllers. Yesterday, Microsoft issued a set of out-of-band patches that sets that aims to set that right by fixing the Windows Print Spooler Remote Code Execution vulnerability listed as CVE-2021-34527.

Serious problem

For Microsoft to publish an out-of-band patch a week before July’s Patch Tuesday shows just how serious the problem is.

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