What is CVE-2022-21978?

CVE-2022-21978 is a vulnerability in Microsoft Exchange Server that allows an attacker to elevate their privileges.

How severe is CVE-2022-21978?

CVE-2022-21978 has a severity rating of 8.2, which is considered high.

Which versions of Microsoft Exchange Server are affected by CVE-2022-21978?

CVE-2022-21978 affects Microsoft Exchange Server 2013 with Cumulative Update 23, 2016 with Cumulative Update 22 or 23, and 2019 with Cumulative Update 11 or 12.

How can an attacker exploit CVE-2022-21978?

An attacker can exploit CVE-2022-21978 by sending a specially crafted request to a vulnerable Exchange server.

Is there a fix available for CVE-2022-21978?

Yes, Microsoft has released security updates to address CVE-2022-21978. It is recommended to install the latest updates as soon as possible.

Vulnerability/
CVE-2022-21978

high

8.2

10/5/2022

3/8/2024

CVE-2022-21978: Microsoft Exchange Server Elevation of Privilege Vulnerability

First published: Tue May 10 2022(Updated: )

Microsoft Exchange Server Elevation of Privilege Vulnerability.

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_22
Microsoft Exchange Server	=2016-cumulative_update_23
Microsoft Exchange Server	=2019-cumulative_update_11
Microsoft Exchange Server	=2019-cumulative_update_12

Remedy

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21978

Never miss a vulnerability like this again

Reference Links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21978

Frequently Asked Questions

What is CVE-2022-21978?
CVE-2022-21978 is a vulnerability in Microsoft Exchange Server that allows an attacker to elevate their privileges.
How severe is CVE-2022-21978?
CVE-2022-21978 has a severity rating of 8.2, which is considered high.
Which versions of Microsoft Exchange Server are affected by CVE-2022-21978?
CVE-2022-21978 affects Microsoft Exchange Server 2013 with Cumulative Update 23, 2016 with Cumulative Update 22 or 23, and 2019 with Cumulative Update 11 or 12.
How can an attacker exploit CVE-2022-21978?
An attacker can exploit CVE-2022-21978 by sending a specially crafted request to a vulnerable Exchange server.
Is there a fix available for CVE-2022-21978?
Yes, Microsoft has released security updates to address CVE-2022-21978. It is recommended to install the latest updates as soon as possible.

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agent/tags
collector/nvd-api
agent/software-canonical-lookup-request
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vendor/microsoft
canonical/microsoft exchange server
version/microsoft exchange server/2013-cumulative_update_23
version/microsoft exchange server/2016-cumulative_update_22
version/microsoft exchange server/2016-cumulative_update_23
version/microsoft exchange server/2019-cumulative_update_11
version/microsoft exchange server/2019-cumulative_update_12

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