CVE-2020-16875 Microsoft Exchange Server Remote Code Execution Vulnerability
An authenticated attacker with specific Exchange roles can execute arbitrary code as System via improper cmdlet argument validation.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-16875?
CVE-2020-16875 is a high-severity code injection vulnerability in Microsoft Exchange Server, published on 11 Sep 2020. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
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>
Which versions are affected by CVE-2020-16875?
It affects 1 product.
Products include Microsoft Exchange Server.
How do I fix CVE-2020-16875?
No fix has been published for CVE-2020-16875 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2020-16875 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-16875 exists.
Public exploit code: 1 Metasploit module.
Other vulnerabilities in Microsoft Exchange Server
- CVE-2024-21410 Microsoft Exchange Server Privilege Escalation
- CVE-2021-34473 Microsoft Exchange Server Remote Code Execution
- CVE-2021-26855 Microsoft Exchange Server Remote Code Execution
- CVE-2021-34523 Microsoft Exchange Server Privilege Escalation
- CVE-2023-21529 Microsoft Exchange Server Deserialization of Untrusted Data
Sources
Also known as GHSA-5rg4-jqjp-6664.