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KLA12169 Multiple vulnerabilities in Microsoft Exchange Server

Description

### *Detect date*: 05/11/2021 ### *Severity*: High ### *Description*: Multiple vulnerabilities were found in Microsoft Exchange Server. Malicious users can exploit these vulnerabilities to execute arbitrary code, spoof user interface, bypass security restrictions. ### *Affected products*: Microsoft Exchange Server 2016 Cumulative Update 20 Microsoft Exchange Server 2019 Cumulative Update 8 Microsoft Exchange Server 2019 Cumulative Update 9 Microsoft Exchange Server 2013 Cumulative Update 23 Microsoft Exchange Server 2016 Cumulative Update 19 ### *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-2021-31198](<https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2021-31198>) [CVE-2021-31209](<https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2021-31209>) [CVE-2021-31207](<https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2021-31207>) [CVE-2021-31195](<https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2021-31195>) ### *Impacts*: ACE ### *Related products*: [Microsoft Exchange Server](<https://threats.kaspersky.com/en/product/Microsoft-Exchange-Server/>) ### *CVE-IDS*: [CVE-2021-31198](<https://vulners.com/cve/CVE-2021-31198>)6.8High [CVE-2021-31209](<https://vulners.com/cve/CVE-2021-31209>)5.0Critical [CVE-2021-31207](<https://vulners.com/cve/CVE-2021-31207>)6.5High [CVE-2021-31195](<https://vulners.com/cve/CVE-2021-31195>)5.0Critical ### *KB list*: [5003435](<http://support.microsoft.com/kb/5003435>)


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