CVE-2021-34523 | Microsoft Exchange Server 2013 CU23/2016 CU19/2016 CU20/2019 CU8/2019 CU9 ProxyShell
A vulnerability classified as very critical has been found in Microsoft Exchange Server 2013 CU23/2016 CU19/2016 CU20/2019 CU8/2019 CU9. This issue affects some unknown processing. Performing manipulation results in an unknown weakness.
This vulnerability is identified as CVE-2021-34523. The attack is only possible with local access. Additionally, an exploit exists.
To fix this issue, it is recommended to deploy a patch.