CVE-2020-0851

Microsoft Word HTML Rendering Use-After-Free Remote Code Execution Vulnerability

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A remote code execution vulnerability exists in Microsoft Word software when it fails to properly handle objects in memory, aka 'Microsoft Word Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2020-0850, CVE-2020-0852, CVE-2020-0855, CVE-2020-0892.

Existe una vulnerabilidad de ejecución de código remota en el software Microsoft Word, cuando tiene un fallo al manejar apropiadamente objetos en memoria, también se conoce como '"Microsoft Word Remote Code Execution Vulnerability"'. Este ID de CVE es diferente de CVE-2020-0850, CVE-2020-0852, CVE-2020-0855, CVE-2020-0892.

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Microsoft Word. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the processing of DOC files with HTML in wwlib. A crafted file can cause a pointer to be reused after it has been freed. An attacker can leverage this vulnerability to execute code in the context of the current process.

*Credits: asnine

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-11-04 CVE Reserved
2020-03-12 CVE Published
2024-08-04 CVE Updated
2024-11-07 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0851	2021-07-21

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Microsoft Search vendor "Microsoft"		Office Search vendor "Microsoft" for product "Office"				2016 Search vendor "Microsoft" for product "Office" and version "2016"		mac_os		Affected
Microsoft Search vendor "Microsoft"		Office Search vendor "Microsoft" for product "Office"				2019 Search vendor "Microsoft" for product "Office" and version "2019"		mac_os		Affected
Microsoft Search vendor "Microsoft"		Office 365 Proplus Search vendor "Microsoft" for product "Office 365 Proplus"				-		-		Affected