CVE-2018-8174

Windows VBScript Engine Remote Code Execution Vulnerability

CVE-2018-8174 is fixed in 31 products on 1 platform, first by KB4103723, released May 8, 2018. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on February 15, 2022, with known ransomware use. Patch Radar priority: Patch now.

Patch nowCISA KEVKnown ransomware use
CVSS
7.5
Critical
Exploitation
Exploited
Reported by the vendor
CISA KEV
Feb 15, 2022
Federal due date Aug 15, 2022. Known ransomware use
EPSS
0.8824
99th percentile

<p>A remote code execution vulnerability exists in the way that the VBScript engine handles objects in memory. 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, an attacker who successfully exploited the vulnerability 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>In a web-based attack scenario, an attacker could host a specially crafted website that is designed to exploit the vulnerability through Internet Explorer and then convince a user to view the website. An attacker could also embed an ActiveX control marked "safe for initialization" in an application or Microsoft Office document that hosts the IE rendering engine. The attacker could also take advantage of compromised websites and websites that accept or host user-provided content or advertisements. These websites could contain specially crafted content that could exploit the vulnerability.</p> <p>The security update addresses the vulnerability by modifying how the scripting engine handles objects in memory.</p>

Where it's fixed

ProductFixed inFixReleased
Microsoft
Windows 10 Version 1607 for 32-bit Systems 14393.2248 KB4103723 May 8, 2018
Windows 10 Version 1607 for x64-based Systems 14393.2248 KB4103723 May 8, 2018
Windows 10 Version 1703 for 32-bit Systems 15063.1088 KB4103731 May 8, 2018
Windows 10 Version 1703 for x64-based Systems 15063.1088 KB4103731 May 8, 2018
Windows 10 Version 1709 for 32-bit Systems 16299.431 KB4103727 May 8, 2018
Windows 10 Version 1709 for x64-based Systems 16299.431 KB4103727 May 8, 2018
Windows 10 Version 1803 for 32-bit Systems 17134.48 KB4103721 May 8, 2018
Windows 10 Version 1803 for x64-based Systems 17134.48 KB4103721 May 8, 2018
Windows 10 for 32-bit Systems 10240.17861 KB4103716 May 8, 2018
Windows 10 for x64-based Systems 10240.17861 KB4103716 May 8, 2018
Windows 7 for 32-bit Systems Service Pack 1 KB4103718 May 8, 2018
Windows 7 for 32-bit Systems Service Pack 1 KB4103712 May 8, 2018
Windows 7 for x64-based Systems Service Pack 1 KB4103718 May 8, 2018
Windows 7 for x64-based Systems Service Pack 1 KB4103712 May 8, 2018
Windows 8.1 for 32-bit systems KB4103725 May 8, 2018
Windows 8.1 for 32-bit systems KB4103715 May 8, 2018
Windows 8.1 for x64-based systems KB4103725 May 8, 2018
Windows 8.1 for x64-based systems KB4103715 May 8, 2018
Windows RT 8.1 KB4103725 May 8, 2018
Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 KB4103718 May 8, 2018
Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 KB4103712 May 8, 2018
Windows Server 2008 R2 for x64-based Systems Service Pack 1 KB4103718 May 8, 2018
Windows Server 2008 R2 for x64-based Systems Service Pack 1 KB4103712 May 8, 2018
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) KB4103718 May 8, 2018
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) KB4103712 May 8, 2018
Windows Server 2008 for 32-bit Systems Service Pack 2 KB4134651 May 8, 2018
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) KB4134651 May 8, 2018
Windows Server 2008 for Itanium-Based Systems Service Pack 2 KB4134651 May 8, 2018
Windows Server 2008 for x64-based Systems Service Pack 2 KB4134651 May 8, 2018
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) KB4134651 May 8, 2018
Windows Server 2012 KB4103730 May 8, 2018
Windows Server 2012 KB4103726 May 8, 2018
Windows Server 2012 (Server Core installation) KB4103730 May 8, 2018
Windows Server 2012 (Server Core installation) KB4103726 May 8, 2018
Windows Server 2012 R2 KB4103725 May 8, 2018
Windows Server 2012 R2 KB4103715 May 8, 2018
Windows Server 2012 R2 (Server Core installation) KB4103725 May 8, 2018
Windows Server 2012 R2 (Server Core installation) KB4103715 May 8, 2018
Windows Server 2016 14393.2248 KB4103723 May 8, 2018
Windows Server 2016 (Server Core installation) 14393.2248 KB4103723 May 8, 2018
Windows Server, version 1709 (Server Core Installation) 16299.431 KB4103727 May 8, 2018
Windows Server, version 1803 (Server Core Installation) 17134.48 KB4103721 May 8, 2018