SharePoint vulnerabilities are security weaknesses in Microsoft SharePoint, a collaboration platform used for document sharing, workflow, and internal portals. They can include authentication bypasses, authorization flaws, injection bugs, file upload issues, or remote code execution paths that let an attacker access content or administrative functions without permission.
These flaws matter because SharePoint is often internet-reachable and connected to sensitive business data. In real attacks, threat actors scan for unpatched servers, stolen credentials, or exposed management interfaces, then use the weakness to read files, create accounts, plant web shells, or move deeper into a network. Defenders reduce risk by patching quickly, restricting public exposure, enforcing multi-factor authentication, reviewing logs for unusual sign-ins or admin actions, and isolating high-value deployments from broader internal systems.