Threat Encyclopedia

MS.Exchange.Server.CVE-2021-34473.Remote.Code.Execution

description-logoDescription

This indicates an attack attempt to exploit a Remote Code Execution in Microsoft Exchange Server.
The vulnerability is due to insufficient sanitization when handling a malicious request. A remote attacker may be able to exploit this to disclose data or execute arbitrary code within the context of the application, via a crafted HTTP request.

affected-products-logoAffected Products

Microsoft Exchange Server 2013 Cumulative Update 23
Microsoft Exchange Server 2019 Cumulative Update 9
Microsoft Exchange Server 2016 Cumulative Update 20
Microsoft Exchange Server 2016 Cumulative Update 19
Microsoft Exchange Server 2019 Cumulative Update 8

Impact

System Compromise: Remote attackers can gain control of vulnerable systems.

recomended-action-logoRecommended Actions

Apply the most recent upgrade or patch from the vendor.
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34473

CVE References

CVE-2021-34473