CVE-2018-8470

Internet Explorer Security Feature Bypass Vulnerability

CVE-2018-8470 is fixed in 18 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
0.0327
88th percentile

<p>A security feature bypass vulnerability exists in Internet Explorer due to how scripts are handled that allows a universal cross-site scripting (UXSS) condition. An attacker could use the UXSS vulnerability to access any session belonging to web pages currently opened (or cached) by the browser at the time the attack is triggered.</p> <p>To exploit the UXSS vulnerability, a user must be logged on and running an affected version of Internet Explorer. The user would then need to browse to a malicious website or a website serving the malicious code.</p> <p>The security update addresses the UXSS vulnerability by helping to ensure that Internet Explorer properly handles scripts.</p>

Where it's fixed

ProductFixed inFixReleased
Microsoft
Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems 14393.2485 KB4457131 Sep 11, 2018
Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems 14393.2485 KB4457131 Sep 11, 2018
Internet Explorer 11 on Windows 10 Version 1703 for 32-bit Systems 15063.1324 KB4457138 Sep 11, 2018
Internet Explorer 11 on Windows 10 Version 1703 for x64-based Systems 15063.1324 KB4457138 Sep 11, 2018
Internet Explorer 11 on Windows 10 Version 1709 for 32-bit Systems 16299.665 KB4457142 Sep 11, 2018
Internet Explorer 11 on Windows 10 Version 1709 for x64-based Systems 16299.665 KB4457142 Sep 11, 2018
Internet Explorer 11 on Windows 10 Version 1803 for 32-bit Systems 17134.285 KB4457128 Sep 11, 2018
Internet Explorer 11 on Windows 10 Version 1803 for x64-based Systems 17134.285 KB4457128 Sep 11, 2018
Internet Explorer 11 on Windows 10 for 32-bit Systems 10240.17976 KB4457132 Sep 11, 2018
Internet Explorer 11 on Windows 10 for x64-based Systems 10240.17976 KB4457132 Sep 11, 2018
Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1 KB4457426 Sep 11, 2018
Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1 KB4457144 Sep 11, 2018
Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1 KB4457426 Sep 11, 2018
Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1 KB4457144 Sep 11, 2018
Internet Explorer 11 on Windows 8.1 for 32-bit systems KB4457129 Sep 11, 2018
Internet Explorer 11 on Windows 8.1 for 32-bit systems KB4457426 Sep 11, 2018
Internet Explorer 11 on Windows 8.1 for x64-based systems KB4457129 Sep 11, 2018
Internet Explorer 11 on Windows 8.1 for x64-based systems KB4457426 Sep 11, 2018
Internet Explorer 11 on Windows RT 8.1 KB4457129 Sep 11, 2018
Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 KB4457426 Sep 11, 2018
Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 KB4457144 Sep 11, 2018
Internet Explorer 11 on Windows Server 2012 R2 KB4457129 Sep 11, 2018
Internet Explorer 11 on Windows Server 2012 R2 KB4457426 Sep 11, 2018
Internet Explorer 11 on Windows Server 2016 14393.2485 KB4457131 Sep 11, 2018