CVE-2017-0240

Scripting Engine Memory Corruption Vulnerability

CVE-2017-0240 is fixed in 8 products on 1 platform, first by KB4019473, released May 9, 2017. 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
0.1473
96th percentile

<p>A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Microsoft Edge (HTML-based). 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 scripting engine handles objects in memory.</p>

Where it's fixed

ProductFixed inFixReleased
Microsoft
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1511 for 32-bit Systems 10586.916 KB4019473 May 9, 2017
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1511 for x64-based Systems 10586.916 KB4019473 May 9, 2017
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for 32-bit Systems 14393.1198 KB4019472 May 9, 2017
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for x64-based Systems 14393.1198 KB4019472 May 9, 2017
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for 32-bit Systems KB4016871 May 9, 2017
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for x64-based Systems KB4016871 May 9, 2017
Microsoft Edge (EdgeHTML-based) on Windows 10 for 32-bit Systems 10240.17394 KB4019474 May 9, 2017
Microsoft Edge (EdgeHTML-based) on Windows 10 for x64-based Systems 10240.17394 KB4019474 May 9, 2017