CVE-2026-55944CWE-502

Microsoft Dynamics NAV and Microsoft Dynamics 365 Business Central (On Premises) Remote Code Execution Vulnerability

Critical · published July 14, 2026

CVSS v3.1
9.8
EPSS
2%
Percentile
74.6
In the wild
Unconfirmed
What it is

Deserialization of untrusted data in Microsoft Dynamics NAV allows an unauthorized attacker to execute code over a network.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CVSS v4.0
Not supplied
EPSS
0.01532 · 74.6th percentile
Weakness
CWE-502 · Deserialization of Untrusted Data
Published
2026-07-14T17:09Z
EPSS history
Timeline
  • 14 JUL 17:09Z
    Microsoft Dynamics NAV and Microsoft Dynamics 365 Business Central (On Premises) Remote Code Execution Vulnerability
    cvelistv5