CVE-2018-8161

Microsoft Office Remote Code Execution Vulnerability

CVE-2018-8161 is fixed in 14 products on 1 platform, first by KB4022139, released May 8, 2018. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
n/a
Important
Exploitation
None reported
Exploitation Less Likely
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.2132
97th percentile

<p>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.</p> <p>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. In a web-based attack scenario, an attacker could host a website (or leverage a compromised website that accepts or hosts user-provided content) containing 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>The security update addresses the vulnerability by correcting how Microsoft Office handles objects in memory.</p>

Where it's fixed

ProductFixed inFixReleased
Microsoft
Microsoft Office 2010 Service Pack 2 (32-bit editions) KB4022139 May 8, 2018
Microsoft Office 2010 Service Pack 2 (64-bit editions) KB4022139 May 8, 2018
Microsoft Office Web Apps 2010 Service Pack 2 KB4022142 May 8, 2018
Microsoft Office Web Apps Server 2013 Service Pack 1 KB4018393 May 8, 2018
Microsoft SharePoint Enterprise Server 2016 KB4018381 May 8, 2018
Microsoft Word 2010 Service Pack 2 (32-bit editions) KB4022141 May 8, 2018
Microsoft Word 2010 Service Pack 2 (64-bit editions) KB4022141 May 8, 2018
Microsoft Word 2013 RT Service Pack 1 KB4018396 May 8, 2018
Microsoft Word 2013 Service Pack 1 (32-bit editions) KB4018396 May 8, 2018
Microsoft Word 2013 Service Pack 1 (64-bit editions) KB4018396 May 8, 2018
Microsoft Word 2016 (32-bit edition) KB4018383 May 8, 2018
Microsoft Word 2016 (64-bit edition) KB4018383 May 8, 2018
Word Automation Services on Microsoft SharePoint Server 2010 Service Pack 2 KB4022135 May 8, 2018
Word Automation Services on Microsoft SharePoint Server 2013 Service Pack 1 KB4018388 May 8, 2018