Vulnerability Details CVE-2021-34523
Microsoft Exchange Server Elevation of Privilege Vulnerability
Exploit prediction scoring system (EPSS) score
EPSS Score 0.94
EPSS Ranking 99.9%
CVSS Severity
CVSS v3 Score 9.0
CVSS v2 Score 7.5
Proposed Action
Microsoft Exchange Server contains an unspecified vulnerability that allows for privilege escalation.
Ransomware Campaign
Known
References
- http://packetstormsecurity.com/files/163895/Microsoft-Exchange-ProxyShell-Remote-Code-Execution.html
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34523
- https://www.zerodayinitiative.com/advisories/ZDI-21-822/
- http://packetstormsecurity.com/files/163895/Microsoft-Exchange-ProxyShell-Remote-Code-Execution.html
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34523
- https://www.zerodayinitiative.com/advisories/ZDI-21-822/
Products affected by CVE-2021-34523
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cpe:2.3:a:microsoft:exchange_server:2013
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cpe:2.3:a:microsoft:exchange_server:2016
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cpe:2.3:a:microsoft:exchange_server:2019