CVE-2026-69377: Microsoft Windows Modern Device Management privilege escalation

CVE-2026-69377 · Severity: high · CVSS 7.8 · Published 2026-09-08

Windows Modern Device Management (MDM) is a system that allows administrators to manage corporate devices and enforce policies. A flaw in its authorization logic permits an authenticated local user to escalate their privileges to a higher level, potentially gaining administrator access or the ability to modify system configuration.

Technologies: Microsoft Windows Modern Device Management. Vendors: Microsoft.

Quick answers

Is CVE-2026-69377 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-69377 being exploited in the wild.
How severe is CVE-2026-69377?
High severity, with a CVSS score of 7.8, published 8 September 2026.
Which products and versions are affected?
Microsoft Windows Modern Device Management.
Is there a fix for CVE-2026-69377?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-69377 attacked?
It is attacked with local access.
Am I affected by CVE-2026-69377?
Check whether you run Microsoft Windows Modern Device Management. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

This vulnerability is a missing authorization check in Windows Modern Device Management (MDM) that allows privilege escalation. An authorized local attacker can exploit a lack of proper access controls to elevate their privileges on the affected system. The attack requires local access and an existing user account on the system. Successful exploitation grants the attacker elevated privileges, potentially enabling them to modify system settings, install software, or access sensitive data. A patch addressing the authorization bypass is available from Microsoft.

Affected products

  • Microsoft Windows Modern Device Management

Timeline

  • 2026-09-08: disclosed

References

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