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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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Microsoft Sharepoint | — | Upgrade to the latest version of Microsoft SharePoint Subscription EditionUpgrade to the latest version of Microsoft SharePoint 2016Upgrade to the latest version of Microsoft SharePoint 2019 | Jul 21, 2025 | Jul 19, 2025 |
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