CVE-2023-21778 Microsoft Dynamics Unified Service Desk Remote Code Execution Vulnerability

High 8.0 Published 14 Feb 2023 Updated 19 Aug 2026

Attackers can execute arbitrary code on systems running Microsoft Dynamics Unified Service Desk via command injection.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2023-21778?

CVE-2023-21778 is a high-severity command injection vulnerability in Microsoft Dynamics 365, published on 14 Feb 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

Microsoft Dynamics Unified Service Desk Remote Code Execution Vulnerability

Weakness: CWE-77

Which versions are affected by CVE-2023-21778?

It affects 1 product.

Products include Microsoft Dynamics 365.

How do I fix CVE-2023-21778?

No fix has been published for CVE-2023-21778 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2023-21778 being exploited?

There is no known exploitation of CVE-2023-21778 in the wild and no public exploit code.

All Microsoft Dynamics 365 vulnerabilities

Sources

Also known as GHSA-9f7p-38pj-28rv.