CVE-2022-21855: Microsoft Exchange Server Remote Code Execution Vulnerability
First published: Tue Jan 11 2022(Updated: )
Microsoft Exchange Server Remote Code Execution Vulnerability. This CVE ID is unique from CVE-2022-21846, CVE-2022-21969.
Credit: secure@microsoft.com secure@microsoft.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Microsoft Exchange Server | =2013-cumulative_update_23 | |
| 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 | |
| Microsoft Exchange Server 2013 | =23 | |
| Microsoft Exchange Server 2016 | =22 | |
| Microsoft Exchange Server 2016 | =21 | |
| Microsoft Exchange Server 2019 | =11 | |
| Microsoft Exchange Server 2019 | =10 |
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Reference Links
Frequently Asked Questions
What is CVE-2022-21855?
CVE-2022-21855 is a remote code execution vulnerability in Microsoft Exchange Server.
How severe is CVE-2022-21855?
CVE-2022-21855 has a severity rating of 9 out of 10, which is considered critical.
Which versions of Microsoft Exchange Server are affected by CVE-2022-21855?
CVE-2022-21855 affects Microsoft Exchange Server 2013 (Cumulative Update 23), Microsoft Exchange Server 2016 (Cumulative Update 21 and 22), and Microsoft Exchange Server 2019 (Cumulative Update 10 and 11).
How can I fix CVE-2022-21855?
To fix CVE-2022-21855, you need to install the appropriate security update provided by Microsoft.
Where can I find more information about CVE-2022-21855?
You can find more information about CVE-2022-21855 on the Microsoft Security Response Center website.
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