CVE-2020-1563

Microsoft Office Remote Code Execution Vulnerability

HIGH
7.8
CVSS Score
Published: August 17, 2020 at 07:13 PM UTC
Updated: June 17, 2026 at 03:01 AM UTC
7 products affected across 1 vendorOffice365 AppsExcel

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Severity
HIGH7.8
Exploit prediction
EPSS 3%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

16.0.1 ≤ v < https://aka.ms/OfficeSecurityReleases16.0.1
Affected range stops below https://aka.ms/OfficeSecurityReleases, so it looks safe — our inference, not a vendor statement
13.0.0.0 ≤ v < publication13.0.0.0
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
15.0.0 ≤ v < publication15.0.0
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
16.0.0 ≤ v < publication16.0.0
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
19.0.0 ≤ v < https://aka.ms/OfficeSecurityReleases19.0.0
Affected range stops below https://aka.ms/OfficeSecurityReleases, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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