CVE-2021-31176: Microsoft Excel XLS File Parsing Use-After-Free Remote Code Execution Vulnerability
Microsoft Office Remote Code Execution Vulnerability
Other sources
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Microsoft Excel. 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 XLS 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.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is CVE-2021-31176?
CVE-2021-31176 is a vulnerability that allows remote attackers to execute arbitrary code on affected installations of Microsoft Excel.
How can the CVE-2021-31176 vulnerability be exploited?
The CVE-2021-31176 vulnerability can be exploited by remote attackers when the target visits a malicious page or opens a malicious XLS file.
Is user interaction required to exploit the CVE-2021-31176 vulnerability?
Yes, user interaction is required to exploit the CVE-2021-31176 vulnerability.
What is the severity of CVE-2021-31176?
The severity of CVE-2021-31176 is high (7.8).
How to fix the CVE-2021-31176 vulnerability?
To fix the CVE-2021-31176 vulnerability, users should apply the security updates provided by Microsoft for the affected software versions.