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Trend Micro Research, News and Perspectives 10 months, 1 week ago

Proactive Security and Insights for SharePoint Attacks (CVE-2025-53770 and CVE-2025-53771)

CVE-2025-53770 and CVE-2025-53771 are vulnerabilities in on-premise Microsoft SharePoint Servers that evolved from previously patched flaws, allowing unauthenticated remote code execution through advanced deserialization and ViewState abuse.

More from Trend Micro Research, News and Perspectives 22 Jul 2025, 12:00 p.m. Actively exploited CVE-2025-53770 CVE-2025-53771 Abuse CVE Flaw Insight Microsoft Patch Remote Code Execution Unauthenticated Vulnerability

Microsoft has released emergency SharePoint security updates for two zero-day vulnerabilities tracked as CVE-2025-53770 and CVE-2025-53771 that have compromised services worldwide in "ToolShell" attacks. [...]

More from Bleeping Computer 21 Jul 2025, 4:41 p.m. Actively exploited CVE-2025-53770 CVE-2025-53771 0-Day CVE Compromise Flaw Microsoft Patch Remote Code Execution Vulnerability