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Microsoft SharePoint Zero-Day Exploited: Urgent Patch Issued for Critical Flaws
Manage episode 500517210 series 3669047
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Microsoft has issued an urgent security advisory addressing two critical vulnerabilities in SharePoint Server, identified as CVE-2025-53770 and CVE-2025-53771, which have been actively exploited since July 7, 2025. These zero-day flaws allow attackers to bypass authentication and execute remote code, posing a severe risk to organizations relying on SharePoint for collaboration and data management. The vulnerabilities, discovered by security researcher Nguyen Jang, affect all supported versions of SharePoint Server, including Subscription Edition and 2019. Microsoft’s swift response includes patches to mitigate the threat, but unpatched systems remain highly vulnerable to sophisticated cyberattacks.
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