Microsoft Patches SharePoint RCE Flaw CVE-2026-45659 Across Server Versions

Microsoft released patches for CVE-2026-45659, a SharePoint remote code execution vulnerability (CVSS 8.8).

• •The vulnerability involves deserialization of untrusted data in Microsoft Office SharePoint
• •Authenticated attackers with Site Member permissions can execute code remotely without admin privileges
• •Affects SharePoint Server Subscription Edition, 2019, and Enterprise Server 2016
• •Researcher MEOW discovered and reported the flaw
• •Though less likely to be exploited, patches are essential given SharePoint's history of weaponized flaws

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