CVE-2018-8469

Microsoft Edge Elevation of Privilege Vulnerability

CVE-2018-8469 is fixed in 11 products on 1 platform, first by KB4457131, released September 11, 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
0.1542
96th percentile

<p>An elevation of privilege vulnerability exists in Microsoft Edge that could allow an attacker to escape from the AppContainer sandbox in the browser. An attacker who successfully exploited this vulnerability could gain elevated privileges and break out of the Edge AppContainer sandbox.</p> <p>The vulnerability by itself does not allow arbitrary code to run. However, this vulnerability could be used in conjunction with one or more vulnerabilities (for example a remote code execution vulnerability and another elevation of privilege vulnerability) to take advantage of the elevated privileges when running.</p> <p>The security update addresses the vulnerability by modifying how Microsoft Edge handles sandboxing.</p>

Where it's fixed

ProductFixed inFixReleased
Microsoft
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for 32-bit Systems 14393.2485 KB4457131 Sep 11, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for x64-based Systems 14393.2485 KB4457131 Sep 11, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for 32-bit Systems 15063.1324 KB4457138 Sep 11, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for x64-based Systems 15063.1324 KB4457138 Sep 11, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for 32-bit Systems 16299.665 KB4457142 Sep 11, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for x64-based Systems 16299.665 KB4457142 Sep 11, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for 32-bit Systems 17134.285 KB4457128 Sep 11, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for x64-based Systems 17134.285 KB4457128 Sep 11, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 for 32-bit Systems 10240.17976 KB4457132 Sep 11, 2018
Microsoft Edge (EdgeHTML-based) on Windows 10 for x64-based Systems 10240.17976 KB4457132 Sep 11, 2018
Microsoft Edge (EdgeHTML-based) on Windows Server 2016 14393.2485 KB4457131 Sep 11, 2018