CVE-2020-1064 MSHTML Engine Remote Code Execution Vulnerability

High 7.5 Published Updated

Attackers can execute arbitrary code via crafted HTML files in Internet Explorer, potentially gaining full system control if the user has admin rights.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2020-1064?

CVE-2020-1064 is a high-severity code injection vulnerability in Microsoft Internet Explorer, published on 21 May 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

A remote code execution vulnerability exists in the way that the MSHTML engine improperly validates input. An attacker could execute arbitrary code in the context of 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. In a HTML editing attack scenario, an attacker could trick a user into editing a specially crafted file that is designed to exploit the vulnerability. The security update addresses the vulnerability by modifying how MSHTML engine validates input.

Which versions are affected by CVE-2020-1064?

It affects 1 product.

Products include Microsoft Internet Explorer.

How do I fix CVE-2020-1064?

No fix has been published for CVE-2020-1064 yet. Limit exposure of the affected software until one is available.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2020-1064 being exploited?

There is no known exploitation of CVE-2020-1064 in the wild and no public exploit code.

All Microsoft Internet Explorer vulnerabilities

Sources

Also known as GHSA-q5p2-r47g-84cm.

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