CVE-2026-40371: CWE-280: Improper Handling of Insufficient Permissions or Privileges in Microsoft Microsoft Dynamics 365 (on-premises) version 9.1
Improper handling of insufficient permissions or privileges in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to elevate privileges over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-40371) in Microsoft Dynamics 365 (on-premises) version 9.1 is due to improper handling of insufficient permissions or privileges (CWE-280). It enables an attacker with some level of authorization to elevate their privileges remotely over a network, impacting confidentiality, integrity, and availability with a CVSS 3.1 base score of 8.8 (high). Microsoft has released an official fix and manages remediation for this cloud-hosted service. No known active exploitation has been reported.
Potential Impact
An authorized attacker can elevate privileges remotely, potentially gaining unauthorized access to sensitive data, modifying or deleting data, and disrupting service availability. The vulnerability affects confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
An official fix is available from Microsoft. Since this is a cloud-hosted service, Microsoft manages remediation server-side. Users should follow the guidance in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40371 to ensure their systems are updated and protected.
CVE-2026-40371: CWE-280: Improper Handling of Insufficient Permissions or Privileges in Microsoft Microsoft Dynamics 365 (on-premises) version 9.1
Description
Improper handling of insufficient permissions or privileges in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to elevate privileges over a network.
CVSS v3.1
Score 8.8high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-40371) in Microsoft Dynamics 365 (on-premises) version 9.1 is due to improper handling of insufficient permissions or privileges (CWE-280). It enables an attacker with some level of authorization to elevate their privileges remotely over a network, impacting confidentiality, integrity, and availability with a CVSS 3.1 base score of 8.8 (high). Microsoft has released an official fix and manages remediation for this cloud-hosted service. No known active exploitation has been reported.
Potential Impact
An authorized attacker can elevate privileges remotely, potentially gaining unauthorized access to sensitive data, modifying or deleting data, and disrupting service availability. The vulnerability affects confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
An official fix is available from Microsoft. Since this is a cloud-hosted service, Microsoft manages remediation server-side. Users should follow the guidance in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40371 to ensure their systems are updated and protected.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-04-11T23:06:15.615Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Is Cloud Service
- true
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40371","vendor":"Microsoft"}]
Threat ID: 6a284cb78dd33fbd8566407d
Added to database: 6/9/2026, 5:26:15 PM
Last enriched: 6/9/2026, 11:26:30 PM
Last updated: 6/10/2026, 6:27:50 AM
Views: 5
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.