CVE-2017-11826

Microsoft Office Remote Code Execution Vulnerability

CVE-2017-11826 is fixed in 16 products on 1 platform, first by KB3213647, released October 10, 2017. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on March 3, 2022. Patch Radar priority: Patch now.

Patch nowCISA KEVPublicly disclosed
CVSS
n/a
Important
Exploitation
Exploited
Reported by the vendor
CISA KEV
Mar 3, 2022
Federal due date Mar 24, 2022
EPSS
0.8222
99th 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 Compatibility Pack Service Pack 3 KB3213647 Oct 10, 2017
Microsoft Office Online Server 2016 KB3213659 Oct 10, 2017
Microsoft Office Web Apps Server 2010 Service Pack 2 KB4011194 Oct 10, 2017
Microsoft Office Web Apps Server 2013 Service Pack 1 KB4011231 Oct 10, 2017
Microsoft Office Word Viewer KB4011236 Oct 10, 2017
Microsoft SharePoint Enterprise Server 2016 KB4011217 Oct 10, 2017
Microsoft Word 2007 Service Pack 3 KB3213648 Oct 10, 2017
Microsoft Word 2010 Service Pack 2 (32-bit editions) KB3213627 Oct 10, 2017
Microsoft Word 2010 Service Pack 2 (32-bit editions) KB3213630 Oct 10, 2017
Microsoft Word 2010 Service Pack 2 (64-bit editions) KB3213627 Oct 10, 2017
Microsoft Word 2010 Service Pack 2 (64-bit editions) KB3213630 Oct 10, 2017
Microsoft Word 2013 RT Service Pack 1 KB4011232 Oct 10, 2017
Microsoft Word 2013 Service Pack 1 (32-bit editions) KB4011232 Oct 10, 2017
Microsoft Word 2013 Service Pack 1 (64-bit editions) KB4011232 Oct 10, 2017
Microsoft Word 2016 (32-bit edition) KB4011222 Oct 10, 2017
Microsoft Word 2016 (64-bit edition) KB4011222 Oct 10, 2017
Word Automation Services on Microsoft SharePoint Server 2010 Service Pack 2 KB3213623 Oct 10, 2017
Word Automation Services on Microsoft SharePoint Server 2013 Service Pack 1 KB4011068 Oct 10, 2017

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