CVE-2020-1483

Microsoft Outlook Memory Corruption Vulnerability

CVE-2020-1483 is fixed in 7 products on 1 platform, first by KB4484497, released August 11, 2020. It is not reported as exploited. Patch Radar priority: Urgent.

Urgent
CVSS
n/a
Critical
Exploitation
None reported
Exploitation Less Likely
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0884
95th percentile

<p>A remote code execution vulnerability exists in Microsoft Outlook 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.</p> <p>Exploitation of the vulnerability requires that a user open a specially crafted file with an affected version of Microsoft Outlook 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 designed to exploit the vulnerability. An attacker would have no way to force users to visit the website. Instead, an attacker would have to convince users to click a link, typically by way of an enticement in an email or instant message, and then convince them to open the specially crafted file.</p> <p>Note that where severity is indicated as Critical in the Affected Products table, the Preview Pane is an attack vector.</p> <p>The security update addresses the vulnerability by correcting how Outlook handles objects in memory.</p>

Where it's fixed

ProductFixed inFixReleased
Microsoft
Microsoft Outlook 2010 Service Pack 2 (32-bit editions) KB4484497 Aug 11, 2020
Microsoft Outlook 2010 Service Pack 2 (64-bit editions) KB4484497 Aug 11, 2020
Microsoft Outlook 2013 RT Service Pack 1 KB4484486 Aug 11, 2020
Microsoft Outlook 2013 Service Pack 1 (32-bit editions) KB4484486 Aug 11, 2020
Microsoft Outlook 2013 Service Pack 1 (64-bit editions) KB4484486 Aug 11, 2020
Microsoft Outlook 2016 (32-bit edition) KB4484475 Aug 11, 2020
Microsoft Outlook 2016 (64-bit edition) KB4484475 Aug 11, 2020

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