Microsoft · SharePoint Server
Updated July 15, 2026
A vulnerability in Microsoft SharePoint Server allows an unauthorized attacker to elevate privileges over a network. This critical issue can be exploited by attackers to gain access to sensitive data and move laterally within the network. The vulnerability was recently added to the CISA Known Exploited Vulnerabilities list.
If left unpatched, this vulnerability could allow attackers to gain elevated privileges, potentially leading to data breaches, lateral movement, or even complete network compromise. This could result in catastrophic financial and reputational damage.
Apply the latest security updates from Microsoft to patch this vulnerability. Ensure that all affected SharePoint Server instances are updated as soon as possible and consider implementing additional security measures.