CVE-2026-65772: Microsoft Dynamics 365 On-Premises Remote Code Execution Vulnerability

Overview

Severity

High (CVSS 8.8)

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Category

Remote Code Execution

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2026-Sep

Released

2026-09-08

Description

Deserialization of untrusted data in Microsoft Dynamics 365 allows an authorized attacker to execute code over a network.

Affected Products (1)

Microsoft Dynamics

• Microsoft Dynamics 365 (on-premises) version 9.1

Security Updates (1)

• Release Notes

Acknowledgments

41ae55e9310ff27fa6f26af4727e5590

Revision History

• 2026-09-08: Information published.