CVE-2018-8504 Code injection in Microsoft Office

What is CVE-2018-8504?

CVE-2018-8504 is a high-severity code injection vulnerability in Microsoft Office, published on 10 Oct 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

A remote code execution vulnerability exists in Microsoft Word software when the software fails to properly handle objects in Protected View, aka "Microsoft Word Remote Code Execution Vulnerability." This affects Microsoft SharePoint Server, Office 365 ProPlus, Microsoft Office, Microsoft Word.

Which versions are affected by CVE-2018-8504?

It affects 5 products.

Products include Microsoft Office, Microsoft Office 365 Proplus, Microsoft Office Web Apps, Microsoft Sharepoint Server, Microsoft Word.

How do I fix CVE-2018-8504?

No fix has been published for CVE-2018-8504 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-2018-8504 being exploited?

There is no known exploitation of CVE-2018-8504 in the wild and no public exploit code.

Other vulnerabilities in Microsoft Office

• CVE-2018-0798 Microsoft Office Memory Corruption Exploited High 8.8
• CVE-2015-1770 Microsoft Office Uninitialized Memory Use Exploited High 8.8
• CVE-2006-2492 Microsoft Word Malformed Object Pointer Exploited High 8.8
• CVE-2018-0802 Microsoft Office Memory Corruption Exploited High 7.8
• CVE-2017-11882 Microsoft Office Memory Corruption Exploited High 7.8

All Microsoft Office vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-cr8x-g9hm-h8c5.