CVE-2018-8502 Code injection in Microsoft Excel

What is CVE-2018-8502?

CVE-2018-8502 is a high-severity code injection vulnerability in Microsoft Excel, 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 Excel software when the software fails to properly handle objects in Protected View, aka "Microsoft Excel Remote Code Execution Vulnerability." This affects Office 365 ProPlus, Microsoft Office, Microsoft Excel.

Which versions are affected by CVE-2018-8502?

It affects 3 products.

Products include Microsoft Excel, Microsoft Office, Microsoft Office 365 Proplus.

How do I fix CVE-2018-8502?

No fix has been published for CVE-2018-8502 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-2018-8502 being exploited?

There is no known exploitation of CVE-2018-8502 in the wild and no public exploit code.

Other vulnerabilities in Microsoft Excel

• CVE-2019-1297 Microsoft Excel Remote Code Execution Exploited High 8.8
• CVE-2009-0238 Microsoft Office Remote Code Execution Exploited High 8.8
• CVE-2016-7262 Microsoft Office Security Feature Bypass Exploited High 7.8
• CVE-2009-3129 Microsoft Excel Featheader Record Memory Corruption Exploited High 7.8
• CVE-2008-0081 Code injection in n/a Critical 9.8

All Microsoft Excel vulnerabilities

Sources

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

Also known as GHSA-qwg4-xph2-mwgf.