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CVE Number Vulnerability Product Severity Date
CVE-2019-1055 Scripting Engine Memory Corruption Vulnerability Internet Explorer Critical 12-06-2019

Technical Information

Brief overview of the risk:
A remote code execution vulnerability exists in the way the scripting engine handles objects in memory in Microsoft browsers. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, an attacker who successfully exploited the vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

Detailed Information on the risk:
In a web-based attack scenario, an attacker could host a specially crafted website designed to exploit the vulnerability through a Microsoft browser and then convince a user to view the website. An attacker could also embed an ActiveX control marked “safe for initialization” in an application or Microsoft Office document that hosts the browser rendering engine. 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.

The security update addresses the vulnerability by modifying how the scripting engine handles objects in memory.

Further information on this exploit is available at : CVE-2019-1055

Affected Software


Internet Explorer 9 on Windows Server 2008 for 32-bit Systems Service Pack 2,
Internet Explorer 9 on Windows Server 2008 for x64-based Systems Service Pack 2,
Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1,
Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1,
Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1,
Internet Explorer 11 on Windows Server 2012,
Internet Explorer 11 on Windows 8.1 for 32-bit systems,
Internet Explorer 11 on Windows 8.1 for x64-based systems,
Internet Explorer 11 on Windows Server 2012 R2,
Internet Explorer 11 on Windows RT 8.1,
Internet Explorer 11 on Windows 10 for 32-bit Systems,
Internet Explorer 11 on Windows 10 for x64-based Systems,
Internet Explorer 11 on Windows Server 2016,
Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems,
Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems,
Internet Explorer 11 on Windows 10 Version 1703 for 32-bit Systems,
Internet Explorer 11 on Windows 10 Version 1703 for x64-based Systems,
Internet Explorer 11 on Windows 10 Version 1709 for 32-bit Systems,
Internet Explorer 11 on Windows 10 Version 1709 for x64-based Systems,
Internet Explorer 11 on Windows 10 Version 1803 for 32-bit Systems,
Internet Explorer 11 on Windows 10 Version 1803 for x64-based Systems,
Internet Explorer 11 on Windows 10 Version 1803 for ARM64-based Systems,
Internet Explorer 11 on Windows 10 Version 1809 for 32-bit Systems,
Internet Explorer 11 on Windows 10 Version 1809 for x64-based Systems,
Internet Explorer 11 on Windows 10 Version 1809 for ARM64-based Systems,
Internet Explorer 11 on Windows Server 2019,
Internet Explorer 11 on Windows 10 Version 1709 for ARM64-based Systems,
Internet Explorer 11 on Windows 10 Version 1903 for 32-bit Systems,
Internet Explorer 11 on Windows 10 Version 1903 for x64-based Systems,
Internet Explorer 11 on Windows 10 Version 1903 for ARM64-based Systems,
Internet Explorer 10 on Windows Server 2012