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Microsoft Vulnerability Tracker

Microsoft Vulnerability Tracker

Author: mplante

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Posts by mplante

APT28 Exploits Active Microsoft Office Zero-Day to Deliver Malware

February 3, 2026

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Read More… from APT28 Exploits Active Microsoft Office Zero-Day to Deliver Malware

Posted in Nation-state attack, Office, Product, Russia

Microsoft Windows file archival tool WinRAR exploited worldwide

January 28, 2026

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Read More… from Microsoft Windows file archival tool WinRAR exploited worldwide

Posted in Product, Windows

Microsoft Office Zero-Day (CVE-2026-21509) – Emergency Patch Issued for Active Exploitation

January 27, 2026

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Read More… from Microsoft Office Zero-Day (CVE-2026-21509) – Emergency Patch Issued for Active Exploitation

Posted in Office, Product

Azure Identity Token Flaw Exposes Windows Admin Center to Tenant-Wide Breaches

January 22, 2026

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Read More… from Azure Identity Token Flaw Exposes Windows Admin Center to Tenant-Wide Breaches

Posted in Azure, Product

Azure Private Endpoint Deployments Exposes Azure Resources to DoS Attack

January 21, 2026

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Read More… from Azure Private Endpoint Deployments Exposes Azure Resources to DoS Attack

Posted in Azure, Product

Windows SMB Client Vulnerability Exposes Organizations to Full Active Directory Compromise

January 19, 2026

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Read More… from Windows SMB Client Vulnerability Exposes Organizations to Full Active Directory Compromise

Posted in Product, Windows

Azure Identity Token Flaw Exposes Windows Admin Center to Tenant-Wide Breaches

January 16, 2026

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Read More… from Azure Identity Token Flaw Exposes Windows Admin Center to Tenant-Wide Breaches

Posted in Azure, Product

Reprompt attack exploits Microsoft Copilot for data theft

January 15, 2026

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Read More… from Reprompt attack exploits Microsoft Copilot for data theft

Posted in Office, Product

Microsoft Warns of Windows Remote Assistance Security Bypass Vulnerability

January 15, 2026

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Read More… from Microsoft Warns of Windows Remote Assistance Security Bypass Vulnerability

Posted in Product, Windows

Microsoft Patch Tuesday addresses 112 defects, including one actively exploited zero-day

January 13, 2026

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Read More… from Microsoft Patch Tuesday addresses 112 defects, including one actively exploited zero-day

Posted in Office, Product, Windows

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The above compilation of published reports regarding data breaches and cyber attacks targeting Microsoft platforms and products is maintained by NetChoice. NetChoice is dedicated to ensuring free enterprise and free expression can thrive on the Internet securely.