CVE-2020-1563

HIGH

Microsoft 365 Apps and Office - Remote Code Execution via Crafted File

Title source: llm
STIX 2.1

Description

A remote code execution vulnerability exists in Microsoft Office software when the software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. Exploitation of the vulnerability requires that a user open a specially crafted file with an affected version of Microsoft Office. 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. The security update addresses the vulnerability by correcting how Microsoft Office handles objects in memory.

References (1)

Core 1
Core References

Scores

CVSS v3 7.8
EPSS 0.0317
EPSS Percentile 86.7%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

Status published
Products (5)
microsoft/365_apps
microsoft/office 2010
microsoft/office 2013 sp1 (2 CPE variants)
microsoft/office 2016
microsoft/office 2019
Published Aug 17, 2020
Tracked Since Feb 18, 2026