SharePoint RCE CVE-2026-45659: Active Exploits

SharePoint RCE CVE-2026-45659

SharePoint RCE CVE-2026-45659 is now under active exploitation, and the federal patch deadline set by the U.S. Cybersecurity and Infrastructure Security Agency (CISA) is July 4 — tomorrow. The CVSS 8.8 deserialization flaw lets any authenticated user with nothing more than baseline Site Member permissions run code remotely on the server. Shadowserver currently counts more…

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