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TI-2026-40350 Aliases CVE-2026-55944GHSA-rvmx-r962-429w

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

Priority MEDIUM 52CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from Microsoft.

Summary

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

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01532 74th percentileScored 2026-11-07
Fix Fixed Microsoft Dynamics NAV 2018 (Microsoft): 11.0.50704.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftMicrosoft Dynamics NAV 20181.0 to before 11.0.50704.011.0.50704.0Patch availableCNA
  • Microsoft Dynamics NAV 2018 VendorMicrosoft Affected 1.0 to before 11.0.50704.0 Fixed in 11.0.50704.0 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:dynamics_nav:2018:*:*:*:*:*:*:*2018VulnerableMicrosoft
  • cpe:2.3:a:microsoft:dynamics_nav:2018:*:*:*:*:*:*:* Versions 2018 Vulnerable ·Microsoft

Remediation

  • Fix · CNA Microsoft Dynamics NAV 2018 (Microsoft) Fixed in 11.0.50704.0

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Remote Code Execution
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation More Likely
ProductStatusPlan or fix
Microsoft Dynamics NAV 2018Fixed 11.0.50704.0 · Security Update

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-55944
  2. 2026-10-03 Alias added: GHSA-rvmx-r962-429w

References

Patch 1

  • TI-2020-00875 An remote code execution vulnerability exists in Microsoft Dynamics Business Central, aka… CVSS 3.1HIGH 8.0
  • TI-2020-00991 A remote code execution vulnerability exists in Microsoft Dynamics Business Central, aka… CVSS 3.1HIGH 8.0
  • TI-2020-00987 Information disclosure in Microsoft Dynamics NAV 2016 CVSS 3.1HIGH 7.5
  • TI-2022-19648 Microsoft Dynamics NAV and Microsoft Dynamics 365 Business Central (On Premises) Remote Code Execution Vulnerability CVSS 3.1HIGH 8.5
  • TI-2020-13107 Microsoft Dynamics Business Central/NAV Information Disclosure Vulnerability CVSS 3.1MEDIUM 6.5
  • TI-2021-01440 Microsoft Dynamics Business Central Cross-site Scripting Vulnerability CVSS 3.1MEDIUM 6.1
See all 9 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences