CVE-2020-1056

Microsoft Edge Elevation of Privilege Vulnerability

CVE-2020-1056 is fixed in 19 products on 1 platform, first by KB4556813, released May 12, 2020. It is not reported as exploited. Patch Radar priority: Urgent.

Urgent
CVSS
5.4
Critical
Exploitation
None reported
Exploitation Less Likely
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0214
82nd percentile

<p>An elevation of privilege vulnerability exists when Microsoft Edge does not properly enforce cross-domain policies, which could allow an attacker to access information from one domain and inject it into another domain.</p> <p>In a web-based attack scenario, an attacker could host a website that is used to attempt to exploit the vulnerability. In addition, compromised websites and websites that accept or host user-provided content could contain specially crafted content that could exploit the vulnerability. However, in all cases an attacker would have no way to force users to view the 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. An attacker who successfully exploited this vulnerability could elevate privileges in affected versions of Microsoft Edge.</p> <p>The security update addresses the vulnerability by helping to ensure that cross-domain policies are properly enforced in Microsoft Edge.</p>

Where it's fixed

ProductFixed inFixReleased
Microsoft
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for 32-bit Systems 14393.3686 KB4556813 May 12, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for x64-based Systems 14393.3686 KB4556813 May 12, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for 32-bit Systems 16299.1868 KB4556812 May 12, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for ARM64-based Systems 16299.1868 KB4556812 May 12, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for x64-based Systems 16299.1868 KB4556812 May 12, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for 32-bit Systems 17134.1488 KB4556807 May 12, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for ARM64-based Systems 17134.1488 KB4556807 May 12, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for x64-based Systems 17134.1488 KB4556807 May 12, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for 32-bit Systems 17763.1217 KB4551853 May 12, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for ARM64-based Systems 17763.1217 KB4551853 May 12, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for x64-based Systems 17763.1217 KB4551853 May 12, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1903 for 32-bit Systems KB4556799 May 12, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1903 for ARM64-based Systems KB4556799 May 12, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1903 for x64-based Systems KB4556799 May 12, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1909 for 32-bit Systems KB4556799 May 12, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1909 for ARM64-based Systems KB4556799 May 12, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1909 for x64-based Systems KB4556799 May 12, 2020
Microsoft Edge (EdgeHTML-based) on Windows Server 2016 14393.3686 KB4556813 May 12, 2020
Microsoft Edge (EdgeHTML-based) on Windows Server 2019 17763.1217 KB4551853 May 12, 2020

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