Multiple vulnerabilities in Microsoft Exchange Server

Description

Multiple vulnerabilities were found in Microsoft Exchange Server. Malicious users can exploit these vulnerabilities to execute arbitrary code, spoof user interface, bypass security restrictions.

Below is a complete list of vulnerabilities:

1. A remote code execution vulnerability in Microsoft Exchange Server can be exploited remotely to execute arbitrary code.
2. A spoofing vulnerability in Microsoft Exchange Server can be exploited remotely to spoof user interface.
3. A security feature bypass vulnerability in Microsoft Exchange Server can be exploited remotely to bypass security restrictions.

Original advisories

• CVE-2021-31198

• CVE-2021-31209
• CVE-2021-31207
• CVE-2021-31195

Exploitation

This vulnerability can be exploited by the following malware:

https://threats.kaspersky.com/en/threat/Exploit.Win32.ProxyShell/

Related products

• Microsoft-Exchange-Server

CVE list

• CVE-2021-31198
  critical
• CVE-2021-31209
  high
• CVE-2021-31207
  high
• CVE-2021-31195
  high

KB list

• 5003435

Read more

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