Vulnerabilities > CVE-2020-16949 - Memory Leak vulnerability in Microsoft products

CVSS 4.7 - MEDIUM

Attack vector

LOCAL

Attack complexity

HIGH

Privileges required

LOW

Confidentiality impact

NONE

Integrity impact

NONE

Availability impact

HIGH

local

high complexity

microsoft

CWE-401

NVD

Published: 2020-10-16

Updated: 2023-12-31

Summary

A denial of service vulnerability exists in Microsoft Outlook software when the software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could cause a remote denial of service against a system. Exploitation of the vulnerability requires that a specially crafted email be sent to a vulnerable Outlook server. The security update addresses the vulnerability by correcting how Microsoft Outlook handles objects in memory.

Vulnerable Configurations

Part	Description	Count
OS	Microsoft Microsoft Windows Server 2008 R2 Microsoft Windows Server 2008 - Microsoft Windows Server 2012 R2 Microsoft Windows Server 2012 - Microsoft Windows 10 1607 Microsoft Windows 10 - Microsoft Windows 10 1709 Microsoft Windows 10 1803 Microsoft Windows 10 1809 Microsoft Windows 10 1903 Microsoft Windows 10 1909 Microsoft Windows 10 2004 Microsoft Windows 8.1 - Microsoft Windows Server 2016 - Microsoft Windows Server 2016 1903 Microsoft Windows Server 2016 1909 Microsoft Windows Server 2016 2004 Microsoft Windows 7 - Microsoft Windows RT 8.1 - Microsoft Windows Server 2019 -	20
Application	Microsoft Microsoft Outlook 2016 Microsoft Outlook 2010 Microsoft Outlook 2013 Microsoft Office 2019 Microsoft 365 Apps -	6

Common Weakness Enumeration (CWE)

CWE-401 - Improper Release of Memory Before Removing Last Reference ('Memory Leak')

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16949