Vulnerability · Published Sep 11, 2020 · Assigned by microsoft
CVE-2020-16875Microsoft Exchange Server Remote Code Execution Vulnerability
High 8.4
In plain English
A high-severity security flaw in Microsoft Exchange Server 2016 Cumulative Update 16 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 46.5% (higher than 99% of all known vulnerabilities). Ready-made attack tooling exists: Metasploit.
Official description
<p>A remote code execution vulnerability exists in Microsoft Exchange server due to improper validation of cmdlet arguments.</p> <p>An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the System user. Exploitation of the vulnerability requires an authenticated user in a certain Exchange role to be compromised.</p> <p>The security update addresses the vulnerability by correcting how Microsoft Exchange handles cmdlet arguments.</p>
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 5 | 15.02.0 – before publication |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 6 | 15.02.0 – before publication |
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 16 | 15.01.0 – before publication |
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 17 | 15.01.0 – before publication |