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Rewterz Threat Advisory – Microsoft Excel security bypass Vulnerability
November 10, 2021

Rewterz Threat Advisory – Microsoft Exchange Server Remote Code Execution Vulnerability

Severity

High

Analysis Summary

CVE-2021-42321

Microsoft Exchange Server could allow a remote authenticated attacker to execute arbitrary code on the system. By sending a specially-crafted request, an attacker could exploit this vulnerability to execute arbitrary code on the system.

Impact

  • Remote code execution

Affected Vendors

Microsoft

Affected Products

  • Microsoft Exchange Server 2016 CU21
  • Microsoft Exchange Server 2019 CU10
  • Microsoft Exchange Server 2016 CU22
  • Microsoft Exchange Server 2019 CU11

Remediation

Use Microsoft Automatic Update to apply the appropriate patch for your system, or the Microsoft Security Update Guide to search for available patches.

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-42321