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CVE-2021-33766— Microsoft Exchange Server Information Disclosure Vulnerability

CVSS 7.3 · High KEV EPSS 93.61% · P100
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I. Basic Information for CVE-2021-33766

Vulnerability Information
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Vulnerability Title
Microsoft Exchange Server Information Disclosure Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
Microsoft Exchange Server Information Disclosure Vulnerability
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Microsoft Exchange Server 授权问题漏洞
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存在授权问题漏洞。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 Se
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)

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Affected Products

VendorProductAffected VersionsCPESubscribe
MicrosoftMicrosoft Exchange Server 2019 Cumulative Update 9 15.02.0 ~ 15.02.0858.010 cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_9:*:*:*:*:*:*
MicrosoftMicrosoft Exchange Server 2016 Cumulative Update 20 15.01.0 ~ 15.01.2242.008 cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_20:*:*:*:*:*:*
MicrosoftMicrosoft Exchange Server 2013 Cumulative Update 23 15.00.0 ~ 15.00.1497.015 cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_23:*:*:*:*:*:*
MicrosoftMicrosoft Exchange Server 2016 Cumulative Update 19 15.01.0 ~ 15.01.2176.012 cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_19:*:*:*:*:*:*
MicrosoftMicrosoft Exchange Server 2019 Cumulative Update 8 15.02.0 ~ 15.02.0792.013 cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_8:*:*:*:*:*:*

II. Public POCs for CVE-2021-33766

#POC DescriptionSource LinkShenlong Link
1ProxyToken (CVE-2021-33766) : An Authentication Bypass in Microsoft Exchange Server POC exploithttps://github.com/bhdresh/CVE-2021-33766POC Details
2CVE-2021-33766-pochttps://github.com/demossl/CVE-2021-33766-ProxyTokenPOC Details
3Microsoft Exchange Server Information Disclosure Vulnerability. This vulnerability enables an attacker to bypass authentication and gain access to the Exchange Server's internal. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-33766.yamlPOC Details
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III. Intelligence Information for CVE-2021-33766

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Same Patch Batch · Microsoft · 2021-07-14 · 90 CVEs total

CVE-2021-344739.1 CRITICALMicrosoft Exchange Server Remote Code Execution Vulnerability
CVE-2021-345239.0 CRITICALMicrosoft Exchange Server Elevation of Privilege Vulnerability
CVE-2021-337568.8 HIGHWindows DNS Snap-in Remote Code Execution Vulnerability
CVE-2021-345258.8 HIGHWindows DNS Server Remote Code Execution Vulnerability
CVE-2021-337528.8 HIGHWindows DNS Snap-in Remote Code Execution Vulnerability
CVE-2021-337508.8 HIGHWindows DNS Snap-in Remote Code Execution Vulnerability
CVE-2021-345088.8 HIGHWindows Kernel Remote Code Execution Vulnerability
CVE-2021-337498.8 HIGHWindows DNS Snap-in Remote Code Execution Vulnerability
CVE-2021-344948.8 HIGHWindows DNS Server Remote Code Execution Vulnerability
CVE-2021-337808.8 HIGHWindows DNS Server Remote Code Execution Vulnerability
CVE-2021-344698.2 HIGHMicrosoft Office Security Feature Bypass Vulnerability
CVE-2021-337678.2 HIGHOpen Enclave SDK Elevation of Privilege Vulnerability
CVE-2021-337798.1 HIGHWindows AD FS Security Feature Bypass Vulnerability
CVE-2021-337868.1 HIGHWindows LSA Security Feature Bypass Vulnerability
CVE-2021-337818.1 HIGHAzure AD Security Feature Bypass Vulnerability
CVE-2021-345208.1 HIGHMicrosoft SharePoint Server Remote Code Execution Vulnerability
CVE-2021-344928.1 HIGHWindows Certificate Spoofing Vulnerability
CVE-2021-344748.0 HIGHDynamics Business Central Remote Code Execution Vulnerability
CVE-2021-337548.0 HIGHWindows DNS Server Remote Code Execution Vulnerability
CVE-2021-344708.0 HIGHMicrosoft Exchange Server Elevation of Privilege Vulnerability

Showing top 20 of 90 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-2021-33766

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