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CVE-2025-53770

CRITICALCISA KEV

9.8

Descripcion

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.

Detalles CVE

Puntuacion CVSS v3.19.8

SeveridadCRITICAL

Vector CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vector de ataqueNETWORK

ComplejidadLOW

Privilegios requeridosNONE

Interaccion usuarioNONE

Publicado7/20/2025

Ultima modificacion10/27/2025

Fuentekev

Avistamientos honeypot0

CISA KEV

VendedorMicrosoft

ProductoSharePoint

Nombre vulnerabilidadMicrosoft SharePoint Deserialization of Untrusted Data Vulnerability

Fecha inclusion KEV2025-07-20

Fecha limite remediacion2025-07-21

Uso en ransomwareKnown

Productos afectados

microsoft:sharepoint_server

Debilidades (CWE)

CWE-502

Referencias

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53770(secure@microsoft.com)

https://arstechnica.com/security/2025/07/sharepoint-vulnerability-with-9-8-severity-rating-is-under-exploit-across-the-globe/(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/kaizensecurity/CVE-2025-53770(af854a3a-2127-422b-91ae-364da2661108)

https://msrc.microsoft.com/blog/2025/07/customer-guidance-for-sharepoint-vulnerability-cve-2025-53770/(af854a3a-2127-422b-91ae-364da2661108)

https://news.ycombinator.com/item?id=44629710(af854a3a-2127-422b-91ae-364da2661108)

https://research.eye.security/sharepoint-under-siege/(af854a3a-2127-422b-91ae-364da2661108)

https://therecord.media/microsoft-sharepoint-zero-day-vulnerability-exploited-globally(af854a3a-2127-422b-91ae-364da2661108)

https://www.bleepingcomputer.com/news/microsoft/microsoft-sharepoint-zero-day-exploited-in-rce-attacks-no-patch-available/(af854a3a-2127-422b-91ae-364da2661108)

https://www.cisa.gov/news-events/alerts/2025/07/20/microsoft-releases-guidance-exploitation-sharepoint-vulnerability-cve-2025-53770(af854a3a-2127-422b-91ae-364da2661108)

https://www.darkreading.com/remote-workforce/microsoft-rushes-emergency-fix-exploited-sharepoint-toolshell-flaw(af854a3a-2127-422b-91ae-364da2661108)

https://www.forbes.com/sites/daveywinder/2025/07/20/microsoft-confirms-ongoing-mass-sharepoint-attack---no-patch-available/(af854a3a-2127-422b-91ae-364da2661108)

https://x.com/Shadowserver/status/1946900837306868163(af854a3a-2127-422b-91ae-364da2661108)

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-53770(134c704f-9b21-4f2e-91b3-4a467353bcc0)

Correlaciones IOC

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