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Microsoft Issues Emergency Patch for Critical Windows PrintNightmare Vulnerability.

July 6, 2021

Microsoft issues critical out-of-band security update to address a critical zero-day vulnerability — known as "PrintNightmare" — that affects the Windows Print Spooler service and can permit remote threat actors to run arbitrary code and take over vulnerable systems.

Tracked as CVE-2021-34527 (CVSS score: 8.8), the remote code execution flaw impacts all supported editions of Windows. Last week, the company warned it had detected active exploitation attempts targeting the vulnerability.

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