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CVE-2021-31198— Microsoft Exchange Server Remote Code Execution Vulnerability

Quick assessment

Affected
Microsoft Microsoft Exchange Server 2019 Cumulative Update 9
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microsoft Exchange Server是美国微软（Microsoft）公司的一套电子邮件服务程序。它提供邮件存取、储存、转发，语音邮件，邮件过滤筛选等功能。 Microsoft Exchange Server存在输入验证错误漏洞。以下产品和版本受到影响：Microsoft Exchange Server 2019 Cumulative Update 9,Microsoft Exchange Server 2016 Cumulative Update 20,Microsoft Exchange

CVSS 7.8 · High EPSS 4.87% · P92

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-31198

Vulnerability Information
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Vulnerability Title
Microsoft Exchange Server Remote Code Execution Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Microsoft Exchange Server Remote Code Execution Vulnerability
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Exchange Server 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Exchange Server是美国微软（Microsoft）公司的一套电子邮件服务程序。它提供邮件存取、储存、转发，语音邮件，邮件过滤筛选等功能。 Microsoft Exchange Server存在输入验证错误漏洞。以下产品和版本受到影响：Microsoft Exchange Server 2019 Cumulative Update 9,Microsoft Exchange Server 2016 Cumulative Update 20,Microsoft Exchange
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Microsoft Microsoft Exchange Server 2019 Cumulative Update 9 15.02.0 ~ 15.02.0858.012 cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_9:*:*:*:*:*:*
Microsoft Microsoft Exchange Server 2016 Cumulative Update 20 15.01.0 ~ 15.01.2242.010 cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_20:*:*:*:*:*:*
Microsoft Microsoft Exchange Server 2013 Cumulative Update 23 15.00.0 ~ 15.00.1497.018 cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_23:*:*:*:*:*:*
Microsoft Microsoft Exchange Server 2016 Cumulative Update 19 15.01.0 ~ 15.01.2176.014 cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_19:*:*:*:*:*:*
Microsoft Microsoft Exchange Server 2019 Cumulative Update 8 15.02.0 ~ 15.02.0792.015 cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_8:*:*:*:*:*:*

II. Public POCs for CVE-2021-31198

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III. Intelligence Information for CVE-2021-31198

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Vendor Advisories for CVE-2021-31198 (2)

Same Patch Batch · Microsoft · 2021-05-11 · 52 CVEs total

CVE-2021-28476 9.9 CRITICAL Windows Hyper-V Remote Code Execution Vulnerability
CVE-2021-31166 9.8 CRITICAL HTTP Protocol Stack Remote Code Execution Vulnerability
CVE-2021-27068 8.8 HIGH Visual Studio Remote Code Execution Vulnerability
CVE-2021-28455 8.8 HIGH Microsoft Jet Red Database Engine and Access Connectivity Engine Remote Code Execution Vul
CVE-2021-28474 8.8 HIGH Microsoft SharePoint Server Remote Code Execution Vulnerability
CVE-2021-31181 8.8 HIGH Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2021-31194 8.8 HIGH OLE Automation Remote Code Execution Vulnerability
CVE-2021-31180 7.8 HIGH Microsoft Office Graphics Remote Code Execution Vulnerability
CVE-2021-31187 7.8 HIGH Windows WalletService Elevation of Privilege Vulnerability
CVE-2021-31211 7.8 HIGH Visual Studio Code Remote Code Execution Vulnerability
CVE-2021-31165 7.8 HIGH Windows Container Manager Service Elevation of Privilege Vulnerability
CVE-2021-31167 7.8 HIGH Windows Container Manager Service Elevation of Privilege Vulnerability
CVE-2021-31168 7.8 HIGH Windows Container Manager Service Elevation of Privilege Vulnerability
CVE-2021-31188 7.8 HIGH Windows Graphics Component Elevation of Privilege Vulnerability
CVE-2021-31170 7.8 HIGH Windows Graphics Component Elevation of Privilege Vulnerability
CVE-2021-31179 7.8 HIGH Microsoft Office Remote Code Execution Vulnerability
CVE-2021-31177 7.8 HIGH Microsoft Office Remote Code Execution Vulnerability
CVE-2021-31175 7.8 HIGH Microsoft Office Remote Code Execution Vulnerability
CVE-2021-31176 7.8 HIGH Microsoft Office Remote Code Execution Vulnerability
CVE-2021-31169 7.8 HIGH Windows Container Manager Service Elevation of Privilege Vulnerability

Showing top 20 of 52 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Microsoft Exchange Server 2019 Cumulative Update 9
Same vendor: Microsoft

V. Comments for CVE-2021-31198

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