CVE-2026-100214 Microsoft Dynamics 365 Business Central Remote Code Execution Vulnerability
An authorized attacker can execute arbitrary code remotely via unsafe deserialization in Microsoft Dynamics 365 Business Central.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-100214?
CVE-2026-100214 is a high-severity unsafe deserialization vulnerability in Microsoft Dynamics NAV 2017, published on 13 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Deserialization of untrusted data in Dynamics Business Central allows an authorized attacker to execute code over a network.
Weakness: CWE-502
Which versions are affected by CVE-2026-100214?
How do I fix CVE-2026-100214?
No fix has been published for CVE-2026-100214 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-100214 being exploited?
There is no known exploitation of CVE-2026-100214 in the wild and no public exploit code.
Sources
Also known as GHSA-5f72-8jgj-6pr6.