Microsoft Releases Critical Patch for SharePoint RCE Vulnerability CVE-2026-45659
In May 2026, Microsoft addressed a critical remote code execution vulnerability, CVE-2026-45659, in SharePoint Server versions 2016, 2019, and Subscription Edition. This flaw arises from the deserialization of untrusted data, allowing authenticated attackers with minimal permissions to execute arbitrary code remotely without user interaction. The vulnerability has a CVSS score of 8.8, indicating high severity. ([thehackernews.com](https://thehackernews.com/2026/05/microsoft-patches-sharepoint-rce-flaw.html?utm_source=openai)) The prompt release of patches underscores the importance of timely updates, especially given SharePoint's role in storing sensitive corporate data. Organizations are urged to apply these updates promptly to mitigate potential exploitation risks. ([helpnetsecurity.com](https://www.helpnetsecurity.com/2026/05/26/sharepoint-vulnerability-cve-2026-45659/?utm_source=openai))
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