CVE-2018-8545

Microsoft Edge Information Disclosure Vulnerability

CVE-2018-8545 is fixed in 7 products on 1 platform, first by KB4467702, released November 13, 2018. It is not reported as exploited, but the vendor rates exploitation more likely. Patch Radar priority: Urgent.

Urgent
CVSS
4.3
Important
Exploitation
More likely
Vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0587
93rd percentile

<p>An information disclosure vulnerability exists in the way that Microsoft Edge handles cross-origin requests. An attacker who successfully exploited this vulnerability could determine the origin of all webpages in the affected browser.</p> <p>In a web-based attack scenario, an attacker could host a website that is used to attempt to exploit the vulnerability. Additionally, compromised websites and websites that accept or host user-provided content could contain specially crafted content that could be used to exploit the vulnerability. However, in all cases an attacker would have no way to force users to view attacker-controlled content. Instead, an attacker would have to convince users to take action. For example, an attacker could trick users into clicking a link that takes them to the attacker's site.</p> <p>The security update addresses the vulnerability by correcting how Microsoft Edge handles cross-origin requests.</p>

Where it's fixed

ProductFixed inFixReleased
Microsoft
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for 32-bit Systems 17134.407 KB4467702 Nov 13, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for ARM64-based Systems 17134.407 KB4467702 Nov 13, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for x64-based Systems 17134.407 KB4467702 Nov 13, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for 32-bit Systems 17763.134 KB4467708 Nov 13, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for ARM64-based Systems 17763.134 KB4467708 Nov 13, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for x64-based Systems 17763.134 KB4467708 Nov 13, 2018
Microsoft Edge (EdgeHTML-based) on Windows Server 2019 17763.134 KB4467708 Nov 13, 2018