CVE-2019-1035

Estado: ModificadaAlta (7.8)—

A remote code execution vulnerability exists in Microsoft Word software when it fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could use a specially crafted file to perform actions in the security context of the current user. For example, the file could then take actions on behalf of the logged-on user with the same permissions as the current user. To exploit the vulnerability, a user must open a specially crafted file with an affected version of Microsoft Word software.

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In an email attack scenario, an attacker could exploit the vulnerability by sending the specially crafted file to the user and convincing the user to open the file. In a web-based attack scenario, an attacker could host a website (or leverage a compromised website that accepts or hosts user-provided content) that contains a specially crafted file that is designed to exploit the vulnerability. However, an attacker would have no way to force the user to visit the website. Instead, an attacker would have to convince the user to click a link, typically by way of an enticement in an email or Instant Messenger message, and then convince the user to open the specially crafted file. The security update addresses the vulnerability by correcting how Microsoft Word handles files in memory.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Puntuación base: 7.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 6.56%
Percentil entre todas las CVEs puntuadas: 94
Fecha de la puntuación: 6/10/2026

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

ExplotaciónT1203 Exploitation for Client Executionexecution
ExplotaciónT1204.002 Malicious Fileexecution
Impacto principalT1499.004 Application or System Exploitationimpact
Impacto principalT1574 Hijack Execution Flowstealth · execution

Fuente: mapeo oficial MITRE CTID (CVE → ATT&CK).

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Execution Prevention Behavior Prevention on Endpoint Update Software Application Developer Guidance User Training User Account Management

Tecnologías afectadas (4)

Microsoft — Office Microsoft — Office 365 Proplus Microsoft — Office Online Server Microsoft — Sharepoint Server

CWE

NVD-CWE-noinfo

Referencias

JSON original (NVD)

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  "published": "2019-06-12T14:29:03.587",
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      "value": "A remote code execution vulnerability exists in Microsoft Word software when it fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could use a specially crafted file to perform actions in the security context of the current user. For example, the file could then take actions on behalf of the logged-on user with the same permissions as the current user.\nTo exploit the vulnerability, a user must open a specially crafted file with an affected version of Microsoft Word software. In an email attack scenario, an attacker could exploit the vulnerability by sending the specially crafted file to the user and convincing the user to open the file. In a web-based attack scenario, an attacker could host a website (or leverage a compromised website that accepts or hosts user-provided content) that contains a specially crafted file that is designed to exploit the vulnerability. However, an attacker would have no way to force the user to visit the website. Instead, an attacker would have to convince the user to click a link, typically by way of an enticement in an email or Instant Messenger message, and then convince the user to open the specially crafted file.\nThe security update addresses the vulnerability by correcting how Microsoft Word handles files in memory."
    },
    {
      "lang": "es",
      "value": "Existe una vulnerabilidad de ejecución remota de código en el software Microsoft Word, cuando no puede manejar correctamente los objetos en la memoria, también se conoce como \"Microsoft Word Remote Code Execution Vulnerability\". Este ID de CVE es diferente de CVE-2019-1034."
    }
  ],
  "lastModified": "2026-06-17T02:27:39.620",
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