CVE-2018-8332 Memory corruption in Microsoft Office

What is CVE-2018-8332?

CVE-2018-8332 is a high-severity memory corruption vulnerability in Microsoft Office, published on 13 Sep 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 when the Windows font library improperly handles specially crafted embedded fonts, aka "Win32k Graphics Remote Code Execution Vulnerability." This affects Windows 7, Microsoft Office, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, Windows Server 2016, Windows 8.1, Windows 10, Windows 10 Servers.

Which versions are affected by CVE-2018-8332?

It affects 6 products.

Products include Microsoft Office, Microsoft Office for Mac, Microsoft Windows 10, Microsoft Windows 7, Microsoft Windows 8.1, Microsoft Windows Server.

How do I fix CVE-2018-8332?

No fix has been published for CVE-2018-8332 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-2018-8332 being exploited?

There is no known exploitation of CVE-2018-8332 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-4vv4-p383-vwpv.