CVE-2017-8727

Internet Explorer Memory Corruption Vulnerability

CVE-2017-8727 is fixed in 24 products on 1 platform, first by KB4041689, released October 10, 2017. It is not reported as exploited, but the vendor rates exploitation more likely. Patch Radar priority: Urgent.

Urgent
CVSS
7.5
Critical
Exploitation
More likely
Vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0827
94th percentile

<p>A remote code execution vulnerability exists when Internet Explorer improperly accesses objects in memory via the Microsoft Windows Text Services Framework. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, the attacker could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.</p> <p>An attacker could host a specially crafted website designed to exploit the vulnerability through Internet Explorer, and then convince a user to view the website. The attacker could also take advantage of compromised websites, or websites that accept or host user-provided content or advertisements, by adding specially crafted content that could exploit the vulnerability. In all cases, however, an attacker would have no way to force users to view the attacker-controlled content. Instead, an attacker would have to convince users to take action, typically by an enticement in an email or instant message, or by getting them to open an attachment sent through email.</p> <p>The security update addresses the vulnerability by modifying how the Microsoft Windows Text Services Framework handles objects in memory.</p>

Where it's fixed

ProductFixed inFixReleased
Microsoft
Windows 10 Version 1511 for 32-bit Systems 10586.1176 KB4041689 Oct 10, 2017
Windows 10 Version 1511 for x64-based Systems 10586.1176 KB4041689 Oct 10, 2017
Windows 10 Version 1607 for 32-bit Systems 14393.1770 KB4041691 Oct 10, 2017
Windows 10 Version 1607 for x64-based Systems 14393.1770 KB4041691 Oct 10, 2017
Windows 10 Version 1703 for 32-bit Systems 15063.674 KB4041676 Oct 10, 2017
Windows 10 Version 1703 for x64-based Systems 15063.674 KB4041676 Oct 10, 2017
Windows 10 for 32-bit Systems 10240.17643 KB4042895 Oct 10, 2017
Windows 10 for x64-based Systems 10240.17643 KB4042895 Oct 10, 2017
Windows 7 for 32-bit Systems Service Pack 1 KB4041681 Oct 10, 2017
Windows 7 for 32-bit Systems Service Pack 1 KB4041678 Oct 10, 2017
Windows 7 for x64-based Systems Service Pack 1 KB4041681 Oct 10, 2017
Windows 7 for x64-based Systems Service Pack 1 KB4041678 Oct 10, 2017
Windows 8.1 for 32-bit systems KB4041693 Oct 10, 2017
Windows 8.1 for 32-bit systems KB4041687 Oct 10, 2017
Windows 8.1 for x64-based systems KB4041693 Oct 10, 2017
Windows 8.1 for x64-based systems KB4041687 Oct 10, 2017
Windows RT 8.1 KB4041693 Oct 10, 2017
Windows Server 2008 for 32-bit Systems Service Pack 2 KB4042123 Oct 10, 2017
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) KB4042123 Oct 10, 2017
Windows Server 2008 for Itanium-Based Systems Service Pack 2 KB4042123 Oct 10, 2017
Windows Server 2008 for x64-based Systems Service Pack 2 KB4042123 Oct 10, 2017
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) KB4042123 Oct 10, 2017
Windows Server 2012 KB4041690 Oct 10, 2017
Windows Server 2012 KB4041679 Oct 10, 2017
Windows Server 2012 (Server Core installation) KB4041690 Oct 10, 2017
Windows Server 2012 (Server Core installation) KB4041679 Oct 10, 2017
Windows Server 2012 R2 KB4041693 Oct 10, 2017
Windows Server 2012 R2 KB4041687 Oct 10, 2017
Windows Server 2012 R2 (Server Core installation) KB4041693 Oct 10, 2017
Windows Server 2012 R2 (Server Core installation) KB4041687 Oct 10, 2017
Windows Server 2016 14393.1770 KB4041691 Oct 10, 2017
Windows Server 2016 (Server Core installation) 14393.1770 KB4041691 Oct 10, 2017