A recently uncovered vulnerability in SharePoint Server, identified as CVE-2026-65660, has raised significant concerns in the cybersecurity community. Initially classified by Microsoft as a spoofing flaw with a CVSS score of 6.5, further analysis by Viettel Cyber Security's Dinh Ho Anh Khoa has revealed that the flaw enables authenticated remote code execution (RCE). This vulnerability impacts SharePoint Server versions 2016, 2019, and Subscription Edition, requiring immediate attention from organizations utilizing these platforms.
For businesses, the implications of this vulnerability are profound. The ability for authenticated users to execute arbitrary code remotely can lead to serious data breaches and system compromises. Companies must prioritize applying the patches released by Microsoft to mitigate potential attacks. This situation underscores the importance of robust cybersecurity practices, including regular vulnerability assessments and timely updates, to safeguard sensitive information and maintain compliance. As the landscape of cyber threats continues to evolve, understanding and acting on such vulnerabilities is crucial for organizations aiming to protect their digital assets.
---
*Originally reported by [The Hacker News](https://thehackernews.com/2026/09/sharepoint-flaw-initially-listed-as.html)*