Detections
Analytics
Security Updates for Microsoft Dynamics 365 (on-premises) (August 2026)
high Nessus Plugin ID 335415
Synopsis
The Microsoft Dynamics 365 (on-premises) is affected by multiple vulnerabilities.Description
The Microsoft Dynamics 365 (on-premises) is missing security updates. It is,therefore, affected by the following vulnerabilities:- Deserialization of untrusted data in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to execute code over a network. (CVE-2026-65815)
- Exposure of sensitive information to an unauthorized actor in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to disclose information over a network. (CVE-2026-66301)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Microsoft has released a security update, please review the vendor advisory.See Also
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65815
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66301
Plugin Details
Severity: High
ID: 335415
File Name: smb_nt_ms26_aug_microsoft_dynamics.nasl
Version: 1.1
Type: Local
Agent: windows
Family: Windows : Microsoft Bulletins
Published: 8/14/2026
Updated: 8/14/2026
Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.9
Percentile: 58.14
CVSS v2
Risk Factor: High
Base Score: 9
Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C
CVSS Score Source: CVE-2026-65815
CVSS v3
Risk Factor: High
Base Score: 8.8
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vulnerability Information
CPE: cpe:/a:microsoft:dynamics_365
Required KB Items: installed_sw/Microsoft Dynamics 365 Server
Patch Publication Date: 8/11/2026
Vulnerability Publication Date: 8/11/2026
Reference Information
CVE: CVE-2026-65815, CVE-2026-66301