CVE-2018-8626 Memory corruption in Windows 10

Critical 9.8 Published Updated

Remote attackers can execute arbitrary code on Windows DNS servers by exploiting a heap overflow vulnerability in request handling.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2018-8626?

CVE-2018-8626 is a critical memory corruption vulnerability in Microsoft Windows 10, published on 12 Dec 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A remote code execution vulnerability exists in Windows Domain Name System (DNS) servers when they fail to properly handle requests, aka "Windows DNS Server Heap Overflow Vulnerability." This affects Windows Server 2012 R2, Windows Server 2019, Windows Server 2016, Windows 10, Windows 10 Servers.

Weakness: CWE-787

Which versions are affected by CVE-2018-8626?

It affects 4 products.

Products include Microsoft Windows 10, Microsoft Windows Server 2012, Microsoft Windows Server 2016, Microsoft Windows Server 2019.

How do I fix CVE-2018-8626?

No fix has been published for CVE-2018-8626 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2018-8626 being exploited?

There is no known exploitation of CVE-2018-8626 in the wild and no public exploit code.

All Microsoft Windows 10 vulnerabilities

Sources

Also known as GHSA-r9mj-8p57-hmj9.

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