SharePoint CVE-2026-55040 lets unauthenticated attackers impersonate users and chain with CVE-2026-63520 for code execution

CISA confirmed today that ransomware gangs have begun abusing a high-severity Microsoft SharePoint remote code execution vulnerability, which has been flagged as actively…

SharePoint CVE-2026-55040 lets unauthenticated attackers impersonate users and chain with CVE-2026-63520 for code execution