CVE-2023-21716 Microsoft Word Remote Code Execution Vulnerability

What is CVE-2023-21716?

CVE-2023-21716 is a critical vulnerability in Microsoft Office, published on 14 Feb 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Microsoft Word Remote Code Execution Vulnerability

Weakness: CWE-190

Which versions are affected by CVE-2023-21716?

It affects 8 products.

Products include Microsoft Office, Microsoft Office Long Term Servicing Channel, Microsoft Office Online Server, Microsoft Office Web Apps, Microsoft Sharepoint Enterprise Server, Microsoft Sharepoint Foundation and 2 more.

How do I fix CVE-2023-21716?

No fix has been published for CVE-2023-21716 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-21716 being exploited?

There is no known exploitation of CVE-2023-21716 in the wild and no public exploit code.

Public exploit code: 12 proofs of concept on GitHub.

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-64mm-8wcm-jw5g.