CVE-2017-11826highunder attackCWE-119

CVE-2017-11826: high-severity vulnerability in Microsoft Office

Published · Updated

Follow this CVE+ Monitor Microsoft Office

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

93Vexday Risk Score

Prioritize patching. It under exploitation confirmed by CISA and has a public proof of concept.

ssvc Actcvss 7.8epss 82%
from disclosure to weapon119 days
Published on NVDOct 13
1st PoC+119d
CISA KEV+1602d
Action required by CISAfederal deadline: 2022-03-24

Apply updates per vendor instructions.

In short

Microsoft Office products fail to properly manage memory when processing certain files, allowing attackers to run malicious code on a user's computer simply by tricking them into opening a specially crafted document.

Technical detail

A memory corruption vulnerability (CWE-119) in Microsoft Office's object handling allows remote code execution via crafted Office documents. Attack vector is network-based requiring user interaction (opening a file); exploitation results in arbitrary code execution with user privileges.

Summary generated and translated by AI from the official description.

The full analysis of this CVE is available in Portuguese →

Microsoft Office 2010, SharePoint Enterprise Server 2010, SharePoint Server 2010, Web Applications, Office Web Apps Server 2010 and 2013, Word Viewer, Word 2007, 2010, 2013 and 2016, Word Automation Services, and Office Online Server allow remote code execution when the software fails to properly handle objects in memory.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products
Microsoft Corporation · Microsoft Office
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — Microsoft Office

In the same product, most dangerous first.

CVE-2017-11882HIGHCVE-2017-11882EPSS 99.9%KEVCVE-2017-0262HIGHCVE-2017-0262EPSS 81.0%KEVCVE-2017-0261HIGHCVE-2017-0261EPSS 78.1%KEVCVE-2018-0797—CVE-2018-0797EPSS 24.7%CVE-2017-8506—CVE-2017-8506EPSS 24.2%CVE-2017-8510—CVE-2017-8510EPSS 22.1%