CVE-2021-34473

KEV
Published: Lug 14, 2021 Last Modified: Ott 29, 2025
ExploitDB:
Other exploit source:
Google Dorks:
CRITICAL 9,1
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: none
HIGH 10,0
Access Vector: network
Access Complexity: low
Authentication: none
Confidentiality: complete
Integrity: complete
Availability: complete

Description

AI Translation Available

Microsoft Exchange Server Remote Code Execution Vulnerability

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,9423
Percentile
1,0th
Updated

EPSS Score Trend (Last 90 Days)

918

Server-Side Request Forgery (SSRF)

Incomplete
Common Consequences
Security Scopes Affected:
Confidentiality Integrity Access Control
Potential Impacts:
Read Application Data Execute Unauthorized Code Or Commands Bypass Protection Mechanism
Applicable Platforms
Technologies: AI/ML, Web Based, Web Server
View CWE Details
Application

Exchange Server by Microsoft

cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_20:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Exchange Server by Microsoft

cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_19:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Exchange Server by Microsoft

cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_8:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Exchange Server by Microsoft

cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_9:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Exchange Server by Microsoft

cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_23:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021…
http://packetstormsecurity.com/files/163895/Microsoft-Exchange-ProxyShell-Remot…
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-344…
https://www.zerodayinitiative.com/advisories/ZDI-21-821/
http://packetstormsecurity.com/files/163895/Microsoft-Exchange-ProxyShell-Remot…
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-344…
https://www.zerodayinitiative.com/advisories/ZDI-21-821/