India, July 21 -- A critical zero-day vulnerability in Microsoft SharePoint, identified as CVE-2025-53770, is being exploited in the wild, impacting on-premises deployments across government, healthcare, education, and enterprise environments. So far, at least 75 servers have been compromised -- including U.S. federal, state and local agencies -- with an additional 9,000 exposed SharePoint instances globally at risk.
Microsoft has started to issue emergency patches for affected instances, but some cybersecurity professionals warn that patching is not sufficient to contain the zero-day's attack.
The vulnerability was discovered by the Unit 42 team at Palo Alto Networks and enables attackers to steal cryptographic MachineKey configuration...
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