9.8 Critique Exploitée · rançongiciel

CVE-2025-53770 Microsoft SharePoint Deserialization of Untrusted Data Vulnerability

Exploitation active constatée

· catalogue CISA KEV

Action attendue 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.

Campagnes de rançongiciel Utilisation connue

Faiblesse CWE-502

Description

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.

Produits et versions touchés

Produit	Versions touchées	Corrigé en
Microsoft SharePoint Enterprise Server 2016 16.0	16.0.0 → < 16.0.5513.1001	16.0.5513.1001
Microsoft SharePoint Server 2019 16.0	16.0.0 → < 16.0.10417.20037	16.0.10417.20037
Microsoft SharePoint Server Subscription Edition 16.0	16.0.0 → < 16.0.18526.20508	16.0.18526.20508

Références

Microsoft SharePoint Server Remote Code Execution Vulnerability msrc.microsoft.com

Chronologie

Publiée 20 juillet 2025
Ajoutée au catalogue KEV 20 juillet 2025
Dernière modification 4 août 2026

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