Microsoft SharePoint Has a New RCE Flaw. If You Haven’t Patched Yet, Go Do That.
A critical vulnerability, tracked as CVE-2026-45659, in Microsoft SharePoint can allow attackers to achieve remote code execution with little effort. Microsoft released security updates to patch a high-severity SharePoint vulnerability, tracked as CVE-2026-45659 (CVSS score of 8.8), that could allow remote code execution. The flaw does not require complex conditions for exploitation, making it a […]
Microsoft released security updates to patch a high-severity SharePoint vulnerability, tracked as CVE-2026-45659 (CVSS score of 8.8), that could allow remote code execution. The flaw does not require complex conditions for exploitation, making it a serious risk for unpatched systems. Organizations using Microsoft SharePoint should apply the updates as soon as possible.
The root cause is deserialization of untrusted data.
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