CVE-2018-8280

Chakra Scripting Engine Memory Corruption Vulnerability

CVE-2018-8280 is fixed in 11 products on 1 platform, first by KB4338814, released July 10, 2018. It is not reported as exploited, but the vendor rates exploitation more likely. Patch Radar priority: Urgent.

Urgent
CVSS
4.2
Critical
Exploitation
More likely
Vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.2099
97th percentile

<p>A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge (HTML-based)L. 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 Microsoft Edge (HTML-based) and then convince a user to view the website. 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 Chakra scripting engine handles objects in memory.</p>

Where it's fixed

ProductFixed inFixReleased
Microsoft
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for 32-bit Systems 14393.2368 KB4345418 Jul 16, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for 32-bit Systems 14393.2363 KB4338814 Jul 10, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for x64-based Systems 14393.2368 KB4345418 Jul 16, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for x64-based Systems 14393.2363 KB4338814 Jul 10, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for 32-bit Systems 15063.1209 KB4345419 Jul 16, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for 32-bit Systems 15063.1206 KB4338826 Jul 10, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for x64-based Systems 15063.1209 KB4345419 Jul 16, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for x64-based Systems 15063.1206 KB4338826 Jul 10, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for 32-bit Systems 16299.551 KB4345420 Jul 16, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for 32-bit Systems 16299.547 KB4338825 Jul 10, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for x64-based Systems 16299.551 KB4345420 Jul 16, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for x64-based Systems 16299.547 KB4338825 Jul 10, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for 32-bit Systems 17134.167 KB4345421 Jul 16, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for 32-bit Systems 17134.165 KB4338819 Jul 10, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for x64-based Systems 17134.167 KB4345421 Jul 16, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for x64-based Systems 17134.165 KB4338819 Jul 10, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 for 32-bit Systems 10240.17918 KB4345455 Jul 16, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 for 32-bit Systems 10240.17914 KB4338829 Jul 10, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 for x64-based Systems 10240.17918 KB4345455 Jul 16, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 for x64-based Systems 10240.17914 KB4338829 Jul 10, 2018
Microsoft Edge (EdgeHTML-based) on Windows Server 2016 14393.2368 KB4345418 Jul 16, 2018
Microsoft Edge (EdgeHTML-based) on Windows Server 2016 14393.2363 KB4338814 Jul 10, 2018