Vulnerability · Published Aug 11, 2026 · Assigned by microsoft
CVE-2026-66301Microsoft Dynamics 365 (On-Premises) Information Disclosure Vulnerability
Medium 6.5
In plain English
A medium-severity information exposure in Microsoft Dynamics 365 (on-premises) version 9.1 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 63% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)1.0%top 37.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft Dynamics 365 (on-premises) version 9.1 | 9.0 – before 9.1.0047.0006 |
Weakness: CWE-200 · 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
References
- Microsoft Dynamics 365 (On-Premises) Information Disclosure Vulnerability vendor-advisory, patch