CVE-2025-53770
Microsoft SharePoint Server Remote Code Execution Vulnerability
Microsoft·SharePoint
- Added
- Jul 20, 2025
- Fix due
- Jul 21, 2025
- Ransomware
- Known use
- Published
- Jul 20, 2025
- Updated
- Aug 4, 2026
- First covered
- Oct 2, 2026
- Latest story
- 1 month ago
Summary
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.
CWE-502Deserialization of Untrusted Data
Attack profile
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:W/RC:CCISA required action
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.
Affected products
- Microsoft SharePoint Enterprise Server 201616.0.0 to before 16.0.5513.1001
- Microsoft SharePoint Server 201916.0.0 to before 16.0.10417.20037
- Microsoft SharePoint Server Subscription Edition16.0.0 to before 16.0.18526.20508