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CVE-2026-20963
CRITICALCISA KEV9.8
Descripcion
Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.
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
Publicado1/13/2026
Ultima modificacion4/1/2026
Fuentekev
Avistamientos honeypot0
CISA KEV
VendedorMicrosoft
ProductoSharePoint
Nombre vulnerabilidadMicrosoft SharePoint Deserialization of Untrusted Data Vulnerability
Fecha inclusion KEV2026-03-18
Fecha limite remediacion2026-03-21
Uso en ransomwareUnknown
Productos afectados
microsoft:sharepoint_server
Debilidades (CWE)
CWE-502
Referencias
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20963(secure@microsoft.com)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20963(134c704f-9b21-4f2e-91b3-4a467353bcc0)
Correlaciones IOC
Sin correlaciones registradas
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