CVE-2018-0851 Memory corruption in Microsoft Office

High 8.8 Published Updated

Remote attackers can execute arbitrary code via memory corruption in Microsoft Office applications, requiring user interaction to open a malicious file.

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-2018-0851?

CVE-2018-0851 is a high-severity memory corruption vulnerability in Microsoft Office, published on 15 Feb 2018. 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 Office 2007 SP2, Microsoft Office Word Viewer, Microsoft Office 2010 SP2, Microsoft Office 2013 SP1 and RT SP1, Microsoft Office 2016, and Microsoft Office 2016 Click-to-Run (C2R) allow a remote code execution vulnerability, due to how Office handles objects in memory, aka "Microsoft Office Memory Corruption Vulnerability". This CVE is unique from CVE-2018-0852.

Weakness: CWE-787

Which versions are affected by CVE-2018-0851?

It affects 3 products.

Products include Microsoft Office, Microsoft Office Word Viewer, Microsoft Outlook.

How do I fix CVE-2018-0851?

No fix has been published for CVE-2018-0851 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-2018-0851 being exploited?

There is no known exploitation of CVE-2018-0851 in the wild and no public exploit code.

All Microsoft Office vulnerabilities

Sources

Also known as GHSA-9pmg-xvj6-wmhq.

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