CVE-2017-8637 Security feature bypass in Microsoft Scripting Engine

Medium 5.3 Published Updated

Attackers can bypass Arbitrary Code Guard in Microsoft Edge via JIT compiler memory access flaws, enabling potential code execution.

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-2017-8637?

CVE-2017-8637 is a medium-severity vulnerability in Microsoft Edge, published on 8 Aug 2017. 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

Microsoft Edge in Microsoft Windows 10 1703 allows an attacker to bypass Arbitrary Code Guard (ACG) due to how Microsoft Edge accesses memory in code compiled by the Edge Just-In-Time (JIT) compiler, aka "Scripting Engine Security Feature Bypass Vulnerability".

Which versions are affected by CVE-2017-8637?

It affects 1 product.

Products include Microsoft Edge.

How do I fix CVE-2017-8637?

No fix has been published for CVE-2017-8637 yet. Limit exposure of the affected software until one is available.

Is CVE-2017-8637 being exploited?

There is no known exploitation of CVE-2017-8637 in the wild and no public exploit code.

All Microsoft Edge vulnerabilities

Sources

Also known as GHSA-j949-rjm2-2xh6.

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