cve 2026 55944

The cve 2026 55944 tag covers Microsoft’s critical security vulnerability affecting Dynamics NAV 2018 and Dynamics 365 Business Central on-premises servers. The flaw can allow an unauthenticated remote attacker to execute code by sending a specially crafted login request, without valid credentials or user interaction. Microsoft rates the issue 9.8 Critical and describes exploitation as more likely. Coverage focuses on Microsoft’s July 14, 2026 fix, the deserialization of untrusted data behind the vulnerability, and the heightened risk to internet-reachable enterprise resource planning systems. Organizations running affected servers can use this archive to follow the vulnerability’s impact and prioritize prompt patching before exploitation.