SharePoint 0-day Vulnerability Exploited in Wild by All Sorts of Hacker Groups

A critical zero-day vulnerability in Microsoft SharePoint servers has become a playground for threat actors across the cybercriminal spectrum, with attacks ranging from opportunistic hackers to sophisticated nation-state groups since mid-July 2025. On July 19, 2025, Microsoft confirmed that vulnerabilities collectively known as “ToolShell” were being actively exploited in the wild. The exploit chain comprises […]

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