CVE-2025-53770

Deserialization of untrusted data in on-premises Microsoft SharePoint Server allows an unauthorized attacker to execute code over a network. Microsoft is aware that an exploit for CVE-2025-53770 exists in the wild. Microsoft is preparing and fully testing a comprehensive update to address this vulnerability. In the meantime, please make sure that the mitigation provided in this CVE documentation is in place so that you are protected from exploitation.

Deserialization of untrusted data in on-premises Microsoft SharePoint Server allows an unauthorized attacker to execute code over a network. Microsoft is aware that an exploit for CVE-2025-53770 exists in the wild. Microsoft is preparing and fully testing a comprehensive update to address this vulnerability. In the meantime, please make sure that the mitigation provided in this CVE documentation is in place so that you are protected from exploitation.

La deserialización de datos no confiables en on-premises Microsoft SharePoint Server permite que un atacante no autorizado ejecute código a través de la red. Microsoft tiene conocimiento de la existencia de un exploit para CVE-2025-53770. Microsoft está preparando y probando a fondo una actualización completa para abordar esta vulnerabilidad. Mientras tanto, asegúrese de que la mitigación proporcionada en esta documentación de CVE esté implementada para estar protegido contra el exploit.