CISA Warns of Microsoft SharePoint Server Vulnerability Actively Exploited in Attacks

The Cybersecurity and Infrastructure Security Agency (CISA) has added a critical vulnerability in Microsoft SharePoint Server, tracked as CVE-2026-56164, to its Known Exploited Vulnerabilities catalog due to confirmed active exploitation. This flaw affects on-premises deployments of Microsoft SharePoint Server and allows an unauthenticated attacker to remotely elevate their privileges. CVE-2026-56164 is classified as a missing-authentication […] The post CISA Warns of Microsoft SharePoint Server Vulnerability Actively Exploited in Attacks appeared first on Cyber Security News.