CISA Issues Alert on Microsoft SharePoint 0-Day RCE Exploited in Attacks

CISA Issues Alert on Microsoft SharePoint 0-Day RCE Exploited in Attacks The Cybersecurity and Infrastructure Security Agency (CISA) has issued an urgent security alert regarding a critical zero-day vulnerability inMicrosoft SharePoint Serverthat is being actively exploited in cyberattacks. The vulnerability, tracked as CVE-2025-53770, represents a significant threat to organizations running on-premises SharePoint installations. The flaw stems from a deserialization of untrusted data vulnerabili...