CVE-2017-8523

Microsoft Edge Security Feature Bypass Vulnerability

CVE-2017-8523 is fixed in 9 products on 1 platform, first by KB4022714, released June 13, 2017. It is not reported as exploited, but the vendor rates exploitation more likely. Patch Radar priority: Urgent.

UrgentPublicly disclosed
CVSS
4.3
Important
Exploitation
More likely
Vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0150
74th percentile

<p>A security feature bypass vulnerability exists when Microsoft Edge improperly handles requests of different origins. The vulnerability allows Microsoft Edge to bypass Same-Origin Policy (SOP) restrictions, and to allow requests that should otherwise be ignored. An attacker who successfully exploited the vulnerability could force the browser to send data that would otherwise be restricted.</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 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 affected Microsoft Edge handles different-origin requests.</p>

Where it's fixed

ProductFixed inFixReleased
Microsoft
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1511 for 32-bit Systems 10586.962 KB4022714 Jun 13, 2017
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1511 for x64-based Systems 10586.962 KB4022714 Jun 13, 2017
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for 32-bit Systems 14393.1358 KB4022715 Jun 13, 2017
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for x64-based Systems 14393.1358 KB4022715 Jun 13, 2017
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for 32-bit Systems KB4022725 Jun 13, 2017
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for x64-based Systems KB4022725 Jun 13, 2017
Microsoft Edge (EdgeHTML-based) on Windows 10 for 32-bit Systems 10240.17443 KB4022727 Jun 13, 2017
Microsoft Edge (EdgeHTML-based) on Windows 10 for x64-based Systems 10240.17443 KB4022727 Jun 13, 2017
Microsoft Edge (EdgeHTML-based) on Windows Server 2016 14393.1358 KB4022715 Jun 13, 2017