CVE-2026-40371

FAUCET Score

Improper handling of insufficient permissions or privileges in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to elevate privileges over a network.

First published: Jun 9, 2026Last modified: Jun 16, 2026

Impacted Technologies

Vendor	Product	Version(s)	CPE
		>= 9.1, < 9.1.45.11CPE matchmatch criteria	cpe:2.3:a:microsoft:dynamics_365:::::on-premises:::*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

Exploitability Score

2.8

Impact Score

5.9

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.63%

Probability of exploitation in next 30 days

EPSS Percentile

46.5%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0063 is in the 37th percentile among its peer group of 17,823 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

microsoftpatch availablevia msrc

Product: Microsoft Dynamics 365 (on-premises) version 9.1Fixed in: 9.1.0045.0011

View patch

Vendor Advisories (1)

microsoft2026-Jun/CVE-2026-40371Important

Microsoft Dynamics 365 (on-premises) Elevation of Privilege Vulnerability

Jun 9, 2026

References

msrc.microsoft.com / update-guide/vulnerability/CVE-2026-40371

Vendor Advisory