CVE-2026-40375Network attack vector

Authenticated data disclosure via missing authorization

Published Aug 11, 2026 · Updated Aug 25, 2026

Missing authorization in Microsoft Dynamics 365 Business Central allows remote authenticated users to read restricted data over a network. Microsoft has disclosed only that authorization checks are missing; the public CVE and MSRC records do not identify the affected endpoint, object type, or request path. Exposure is limited to authenticated access, and the published scoring bounds impact to confidentiality with no stated ability to modify data or interrupt service.

CVSS severity6.5
Medium
EPSS probability0.77%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Microsoft Dynamics 365 Business Central allows remote authenticated users to read restricted data over a network. Microsoft has disclosed only that authorization checks are missing; the public CVE and MSRC records do not identify the affected endpoint, object type, or request path. Exposure is limited to authenticated access, and the published scoring bounds impact to confidentiality with no stated ability to modify data or interrupt service.

The record

CVE
CVE-2026-40375
Published
Aug 11, 2026
Updated
Aug 25, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-862
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.8TenableAV:N/AC:L/Au:S/C:C/I:N/A:N
6.5TenableCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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