CVE-2020-16855 Microsoft Office Information Disclosure Vulnerability

What is CVE-2020-16855?

CVE-2020-16855 is a medium-severity vulnerability in Microsoft Office, published on 11 Sep 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

<p>An information disclosure vulnerability exists when Microsoft Office software reads out of bound memory due to an uninitialized variable, which could disclose the contents of memory. An attacker who successfully exploited the vulnerability could view out of bound memory.</p> <p>Exploitation of the vulnerability requires that a user open a specially crafted file with an affected version of Microsoft Office software.</p> <p>The security update addresses the vulnerability by properly initializing the affected variable.</p>

Weakness: CWE-908, CWE-125

Which versions are affected by CVE-2020-16855?

It affects 1 product.

Products include Microsoft Office.

How do I fix CVE-2020-16855?

No fix has been published for CVE-2020-16855 yet. Limit exposure of the affected software until one is available.

Is CVE-2020-16855 being exploited?

There is no known exploitation of CVE-2020-16855 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-gwjj-xwgr-2v6f.