KLA12103
ACE vulnerabilities in Microsoft Exchange Server

Updated: 03/22/2021
Detect date
?
03/02/2021
Severity
?
Critical
Description

Remote code execution vulnerabilities were found in Microsoft Exchange Server. Malicious users can exploit this vulnerability to execute arbitrary code.

Exploitation

Malware exists for this vulnerability. Usually such malware is classified as Exploit. More details.

Affected products

Microsoft Exchange Server 2019 Cumulative Update 8
Microsoft Exchange Server 2013 Cumulative Update 23
Microsoft Exchange Server 2016 Cumulative Update 18
Microsoft Exchange Server 2010 Service Pack 3
Microsoft Exchange Server 2016 Cumulative Update 19
Microsoft Exchange Server 2019 Cumulative Update 7

Solution

Install necessary updates from the KB section, that are listed in your Windows Update (Windows Update usually can be accessed from the Control Panel)

Original advisories

CVE-2021-26412
CVE-2021-26855
CVE-2021-27078
CVE-2021-27065
CVE-2021-26854
CVE-2021-26857
CVE-2021-26858

Impacts
?
ACE 
[?]
Related products
Microsoft Exchange Server
CVE-IDS
?
KB list

5000871
5000978

Microsoft official advisories
Microsoft Security Update Guide
Find out the statistics of the vulnerabilities spreading in your region