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CVE-2026-21258
MEDIUM5.5
Descripcion
Improper input validation in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
Detalles CVE
Puntuacion CVSS v3.15.5
SeveridadMEDIUM
Vector CVSSCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Vector de ataqueLOCAL
ComplejidadLOW
Privilegios requeridosNONE
Interaccion usuarioREQUIRED
Publicado2/10/2026
Ultima modificacion2/11/2026
Fuentenvd
Avistamientos honeypot0
Productos afectados
microsoft:365_appsmicrosoft:excelmicrosoft:officemicrosoft:office_long_term_servicing_channelmicrosoft:office_online_server
Debilidades (CWE)
CWE-20CWE-125
Referencias
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21258(secure@microsoft.com)
Correlaciones IOC
Sin correlaciones registradas
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