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TI-2026-46901 Aliases CVE-2026-65815GHSA-83pg-fr4f-gxq5

Microsoft Dynamics 365 On-Premises Remote Code Execution Vulnerability

Priority MEDIUM 43CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
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 365 (on-premises) allows an authorized attacker to execute code over a network.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01694 77th percentileScored 2026-11-07
Fix Fixed Microsoft Dynamics 365 (on-premises) version 9.1 (Microsoft): 9.1.0047.0006

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
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 365 (on-premises) version 9.19.0 to before 9.1.0047.00069.1.0047.0006Patch availableCNA
  • Microsoft Dynamics 365 (on-premises) version 9.1 VendorMicrosoft Affected 9.0 to before 9.1.0047.0006 Fixed in 9.1.0047.0006 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:dynamics_365:*:*:*:*:on-premises:*:*:*9.1 to before 9.1.47.06VulnerableMicrosoft
  • cpe:2.3:a:microsoft:dynamics_365:*:*:*:*:on-premises:*:*:* Versions 9.1 to before 9.1.47.06 Vulnerable ·Microsoft

Remediation

  • Fix · CNA Microsoft Dynamics 365 (on-premises) version 9.1 (Microsoft) Fixed in 9.1.0047.0006

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Remote Code Execution
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Less Likely
ProductStatusPlan or fix
Microsoft Dynamics 365 (on-premises) version 9.1Fixed 9.1.0047.0006 · Security Update

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-65815
  2. 2026-10-03 Alias added: GHSA-83pg-fr4f-gxq5

References

Patch 1

  • TI-2018-06256 Improper output encoding in Microsoft Dynamics 365 CVSS 3.0HIGH 8.8
  • TI-2020-12866 Microsoft Dynamics 365 (on-premises) Remote Code Execution Vulnerability CVSS 3.1HIGH 8.8
  • TI-2026-31102 Microsoft Dynamics 365 On-Premises Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.9
  • TI-2024-25464 Microsoft Dynamics 365 Elevation of Privilege Vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2022-15512 Microsoft Dynamics CRM (on-premises) Remote Code Execution Vulnerability CVSS 3.1HIGH 8.8
  • TI-2026-35158 Dynamics 365 Elevation of Privilege Vulnerability CVSS 3.1CRITICAL 9.9
See all 102 →

Sources

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