CVE-2021-34453: Microsoft Exchange Server Denial of Service Vulnerability
Published Oct 13, 2021
·Updated
Microsoft Exchange Server Denial of Service Vulnerability
Affected Software
4 affected components
Microsoft Exchange Server=2016-cumulative_update_21
Microsoft Exchange Server=2016-cumulative_update_22
Microsoft Exchange Server=2019-cumulative_update_10
Microsoft Exchange Server=2019-cumulative_update_11
Remediation
Event History
Oct 13, 2021
CVE Published
12:26 AM
Data Sourced
12:26 AM
DescriptionSeverity
Frequently Asked Questions
1
What is CVE-2021-34453?
CVE-2021-34453 is a Microsoft Exchange Server Denial of Service Vulnerability.
2
Which software versions are affected by CVE-2021-34453?
Microsoft Exchange Server versions 2016-cumulative_update_21, 2016-cumulative_update_22, 2019-cumulative_update_10, and 2019-cumulative_update_11 are affected by CVE-2021-34453.
3
What is the severity of CVE-2021-34453?
CVE-2021-34453 has a severity level of 7.5 (high).
4
How can I fix CVE-2021-34453?
Apply the necessary security patches provided by Microsoft to mitigate the vulnerability in Microsoft Exchange Server.
5
Where can I find more information about CVE-2021-34453?
You can find more information about CVE-2021-34453 on the Microsoft Security Response Center website: https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34453