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CVE-2021-26855Date: (C)2021-03-03   (M)2024-03-26


Microsoft Exchange Server Remote Code Execution Vulnerability

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 9.1CVSS Score : 7.5
Exploit Score: 3.9Exploit Score: 10.0
Impact Score: 5.2Impact Score: 6.4
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: NETWORKAccess Vector: NETWORK
Attack Complexity: LOWAccess Complexity: LOW
Privileges Required: NONEAuthentication: NONE
User Interaction: NONEConfidentiality: PARTIAL
Scope: UNCHANGEDIntegrity: PARTIAL
Confidentiality: HIGHAvailability: PARTIAL
Integrity: HIGH 
Availability: NONE 
  
Reference:
http://packetstormsecurity.com/files/161846/Microsoft-Exchange-2019-SSRF-Arbitrary-File-Write.html
http://packetstormsecurity.com/files/161938/Microsoft-Exchange-ProxyLogon-Remote-Code-Execution.html
http://packetstormsecurity.com/files/162610/Microsoft-Exchange-2019-Unauthenticated-Email-Download.html
http://packetstormsecurity.com/files/162736/Microsoft-Exchange-ProxyLogon-Collector.html
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26855

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