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

Key Points:

• CVE-2026-45659 is a critical remote code execution vulnerability in Microsoft SharePoint that allows authenticated attackers to execute arbitrary code without elevated privileges.
• The vulnerability affects all versions of SharePoint and has a CVSS score of 8.8, indicating significant risk. It can be exploited by any authenticated user with Site Member permissions.
• Users are strongly advised to apply the latest patches released by Microsoft to mitigate this vulnerability and enhance security.

Technical Details: CVE-2026-45659 involves deserialization of untrusted data, enabling attackers to execute code over a network with minimal permissions.

MITRE ATT&CK Techniques:

• T1203 - Exploit Public-Facing Application (Initial Access)

IOCs Mentioned: None mentioned