CVE-2021-28453: Microsoft Word DOC File Parsing Use-After-Free Remote Code Execution Vulnerability
Microsoft Word Remote Code Execution Vulnerability
Other sources
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Microsoft Word. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of DOC files. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process.
— ZDI
Affected Software
Remediation
Event History
Frequently Asked Questions
What is CVE-2021-28453?
CVE-2021-28453 is a vulnerability that allows remote attackers to execute arbitrary code on affected installations of Microsoft Word.
How does CVE-2021-28453 work?
CVE-2021-28453 works by exploiting a use-after-free vulnerability in the parsing of DOC files in Microsoft Word.
Is user interaction required to exploit CVE-2021-28453?
Yes, user interaction is required to exploit CVE-2021-28453. The target must visit a malicious page or open a malicious file.
Which versions of Microsoft Word are affected by CVE-2021-28453?
CVE-2021-28453 affects Microsoft Word 2010, 2013, 2016, and 2019.
How can I fix CVE-2021-28453?
To fix CVE-2021-28453, apply the security patches provided by Microsoft for the affected versions of Microsoft Word.