Description
Exposure of sensitive information to an unauthorized actor in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to disclose information over a network.
Published: 2026-08-11
Score: 6.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The vulnerability permits an authorized user to disclose sensitive data that should be protected from unauthorized actors. Over a network, the attacker can retrieve such information, constituting an information disclosure weakness (CWE‑200). The description explicitly notes that confidential information may be exposed to an unauthorized actor, making confidentiality the primary concern.

Affected Systems

Affected systems are Microsoft Dynamics 365 (on‑premises) version 9.1. No other versions or products are listed in the current data.

Risk and Exploitability

The CVSS score of 6.5 indicates moderate severity, while the EPSS score of < 1% suggests a low probability of exploitation at the time of analysis. The vulnerability is not listed in the CISA KEV catalog, further indicating limited current threat. The likely attack vector is remote network access, requiring the attacker to be an authorized user or possess credentials to access the Dynamics 365 instance. Successful exploitation could lead to disclosure of confidential business or customer data over the network.

Generated by OpenCVE AI on August 12, 2026 at 16:22 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Obtain and apply the Microsoft Dynamics 365 on‑premises 9.1 update that addresses this vulnerability, available via the Microsoft Security Response Center update guide.
  • Ensure that only authenticated, authorized users have credentials to access the Dynamics 365 system and review user permissions regularly.
  • Implement network segmentation or firewall rules to limit external network exposure of the Dynamics 365 servers, thereby reducing the attack surface for information disclosure.

Generated by OpenCVE AI on August 12, 2026 at 16:22 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Tue, 11 Aug 2026 22:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 11 Aug 2026 17:15:00 +0000

Type Values Removed Values Added
Description Exposure of sensitive information to an unauthorized actor in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to disclose information over a network.
Title Microsoft Dynamics 365 (On-Premises) Information Disclosure Vulnerability
First Time appeared Microsoft
Microsoft dynamics 365
Weaknesses CWE-200
CPEs cpe:2.3:a:microsoft:dynamics_365:*:*:*:*:on-premises:*:*:*
Vendors & Products Microsoft
Microsoft dynamics 365
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C'}


Subscriptions

Microsoft Dynamics 365
cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-08-31T20:06:01.544Z

Reserved: 2026-07-24T18:06:51.293Z

Link: CVE-2026-66301

cve-icon Vulnrichment

Updated: 2026-08-11T21:02:58.371Z

cve-icon NVD

Status : Analyzed

Published: 2026-08-11T17:19:01.277

Modified: 2026-08-17T13:21:25.000

Link: CVE-2026-66301

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-12T16:30:05Z

Weaknesses
  • CWE-200

    Exposure of Sensitive Information to an Unauthorized Actor