CVE-2021-28483

Microsoft Exchange Server Remote Code Execution Vulnerability

Description

Microsoft Exchange Server Remote Code Execution Vulnerability

9.0

CVSS

Severity: Critical

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.58%

Vendor Advisory microsoft.com

Affected: Microsoft Microsoft Exchange Server 2019 Cumulative Update 9

Affected: Microsoft Microsoft Exchange Server 2016 Cumulative Update 20

Affected: Microsoft Microsoft Exchange Server 2013 Cumulative Update 23

Affected: Microsoft Microsoft Exchange Server 2016 Cumulative Update 19

Affected: Microsoft Microsoft Exchange Server 2019 Cumulative Update 8

References

Link	Tags
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28483	patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-28483?: CVE-2021-28483 has been scored as a critical severity vulnerability.
How to fix CVE-2021-28483?: To fix CVE-2021-28483, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-28483 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-28483 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-28483?: CVE-2021-28483 affects Microsoft Microsoft Exchange Server 2019 Cumulative Update 9, Microsoft Microsoft Exchange Server 2016 Cumulative Update 20, Microsoft Microsoft Exchange Server 2013 Cumulative Update 23, Microsoft Microsoft Exchange Server 2016 Cumulative Update 19, Microsoft Microsoft Exchange Server 2019 Cumulative Update 8.

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