The Cybersecurity and Infrastructure Security Agency (CISA) has issued an urgent security alert regarding a critical zero-day vulnerability in Microsoft SharePoint Server that 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 vulnerability within […]The post CISA Issues Alert on Microsoft SharePoint 0-Day RCE Exploited in Attacks appeared first on GBHackers Security | #1 Globally Trusted Cyber Security News Platform.