CVE-2021-27085 Microsoft Internet Explorer Remote Code Execution

Exploited in the wild High 8.8 Published Updated

Attackers can execute arbitrary code on systems using Internet Explorer, requiring users to apply Microsoft security patches.

Exploited in the wild
Since 3 Nov 2021
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-2021-27085?

CVE-2021-27085 is a high-severity code injection vulnerability in Microsoft Internet Explorer, published on 11 Mar 2021. 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

Internet Explorer Remote Code Execution Vulnerability

Which versions are affected by CVE-2021-27085?

It affects 1 product.

Products include Microsoft Internet Explorer.

How do I fix CVE-2021-27085?

No fix has been published for CVE-2021-27085 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 17 Nov 2021.

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

Is CVE-2021-27085 being exploited?

Yes. Attackers have exploited CVE-2021-27085 in the wild since at least 3 Nov 2021.

All Microsoft Internet Explorer vulnerabilities

Sources

Also known as GHSA-vm76-5x29-7jx8.

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