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.

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CVSS (NVD)

9.8 · CRITICAL

Loại lỗi (CWE)

CWE-502

EPSS (FIRST)

100.00% khả năng bị khai thác trong 30 ngày

CISA KEV

Microsoft SharePoint — Microsoft SharePoint Deserialization of Untrusted Data Vulnerability. Đưa vào 2025-07-20, hạn khắc phục 2025-07-21. Disconnect public-facing versions of SharePoint Server that have reached their end-of-life (EOL) or end-of-service (EOS) to include SharePoint Server 2013 and earlier versions. For supported versions, please follow the mitigations according to CISA (URL listed below in Notes) and vendor instructions (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available.