Microsoft Exchange Server Remote Code Execution Vulnerability CVE-2021-26855 Scanner

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Microsoft Exchange Server Remote Code Execution Vulnerability CVE-2021-26855 Scanner Detail

CVE-2021-26855 is a SSRF vulnerability in Microsoft Exchange Server. By submitting a specially designed HTTP request to a vulnerable Exchange Server, an unauthenticated, remote attacker may exploit this flaw.

The attacker would be able to authenticate to the Exchange Server if this vulnerability was successfully exploited.

Some Advice for Common Problems

  1. Update your Microsoft Exchange Server immediately, to the latest version to eliminate this vulnerability.
  2. Block untrusted connections over port 443.

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