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

Tuesday, May 26, 2026 at 11:49 AM UTC·Source: The Hacker News

Updated: Tuesday, May 26, 2026 at 01:00 PM UTC

Executive Summary

Microsoft has rolled out updates to fix a remote code execution vulnerability impacting SharePoint that could be exploited by bad actors in attacks without requiring any specialized conditions to be met. The vulnerability, tracked as CVE-2026-45659, carries a CVSS score of 8.8. It has been assigned an important severity. "Deserialization of untrusted data in Microsoft Office SharePoint allows

Analysis

Indicators of Compromise (1)

CVE (1)

CVE-2026-45659

NVD MITRE CVE

Source Attribution

Originally published by The Hacker News on May 26, 2026.

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