CVE-2021-31196: Microsoft Exchange Server Information Disclosure Vulnerability

Published Jul 13, 2021
·
Updated

Microsoft Exchange Server contains an information disclosure vulnerability that allows for remote code execution.

Other sources

Microsoft Exchange Server Remote Code Execution Vulnerability

— NVD

Affected Software

11 affected componentsFixes available
Microsoft Exchange Server
Microsoft Exchange Server=2013-cumulative_update_23
Microsoft Exchange Server=2016-cumulative_update_20
Microsoft Exchange Server=2016-cumulative_update_21
Microsoft Exchange Server=2019-cumulative_update_10
Microsoft Exchange Server=2019-cumulative_update_9
Microsoft Exchange Server 2016=21
15.01.2308.014
Microsoft Exchange Server 2019=10
15.02.0922.013
Microsoft Exchange Server 2013=23
15.00.1497.023
Microsoft Exchange Server 2019=9
15.02.0858.015
Microsoft Exchange Server 2016=20
15.01.2242.012

Remediation

Information

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Patch Available

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31196

Patch Available

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-31196

Event History

Jul 13, 2021
CVE Published
via Microsoft·02:00 PM
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·02:00 PM
Affected Software
Updated
via Microsoft·02:00 PM
Description
Jul 14, 2021
CVE Published
via MITRE·05:53 PM
Data Sourced
via MITRE·05:53 PM
DescriptionSeverity
Data Sourced
via NVD·06:15 PM
RemedyDescriptionSeverityAffected Software
Aug 21, 2024
Known Exploited
via CISA·12:00 AM
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Frequently Asked Questions

1

What is CVE-2021-31196?

CVE-2021-31196 is a remote code execution vulnerability in Microsoft Exchange Server.

2

What is the severity of CVE-2021-31196?

The severity of CVE-2021-31196 is high with a severity value of 7.2.

3

Which versions of Microsoft Exchange Server are affected by CVE-2021-31196?

Microsoft Exchange Server 2013 Cumulative Update 23, 2016 Cumulative Update 20 and 21, and 2019 Cumulative Update 9 and 10 are affected by CVE-2021-31196.

4

How can I fix the CVE-2021-31196 vulnerability?

To fix the CVE-2021-31196 vulnerability, apply the latest security updates provided by Microsoft for the affected versions of Microsoft Exchange Server.

5

Where can I find more information about CVE-2021-31196?

You can find more information about CVE-2021-31196 in the Microsoft Security Guidance Advisory for CVE-2021-31196.

Company

Resources

Contact

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