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.
Explotada activamente
- En el catálogo CISA de vulnerabilidades explotadas desde el 20 jul 2025
- Las agencias federales de EE. UU. deben corregirla antes del 21 jul 2025 (BOD 22-01)
- Atacada 2 días antes de que la vulnerabilidad se hiciera pública
- Confirmada por sensores, no solo por informes
- Utilizada en campañas de ransomware
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.
Fuente: CISA KEV · 1 oct 2026 26 sept 2026 21 sept 2026 16 sept 2026 13 sept 2026 12 sept 2026
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HProductos afectados
| Fabricantes | Producto | Versiones |
|---|---|---|
| microsoft | sharepoint server | < 16.0.18526.20508 |
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This product uses the NVD API but is not endorsed or certified by the NVD.