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Microsoft EUVD-2026-16799

| CVE-2026-34391 MEDIUM
Exposure of Data Element to Wrong Session (CWE-488)
2026-03-27 GitHub_M
Information Disclosure Microsoft
6.6
CVSS 4.0
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CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

4
Patch available
Apr 16, 2026 - 05:29 EUVD
4.81.1
EUVD ID Assigned
Mar 27, 2026 - 19:45 euvd
EUVD-2026-16799
Analysis Generated
Mar 27, 2026 - 19:45 vuln.today
CVE Published
Mar 27, 2026 - 19:19 nvd
MEDIUM 6.6

DescriptionNVD

Fleet is open source device management software. Prior to 4.81.1, a vulnerability in Fleet's Windows MDM command processing allows a malicious enrolled device to access MDM commands intended for other devices, potentially exposing sensitive configuration data such as WiFi credentials, VPN secrets, and certificate payloads across the entire Windows fleet. Version 4.81.1 patches the issue.

AnalysisAI

Fleet device management software versions prior to 4.81.1 allow malicious enrolled Windows devices to access Mobile Device Management (MDM) commands intended for other devices, potentially disclosing sensitive configuration data including WiFi credentials, VPN secrets, and certificate payloads across the entire Windows fleet. The vulnerability stems from improper authorization controls in Windows MDM command processing, affecting any organization using Fleet for Windows device management. …

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RemediationAI

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

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EUVD-2026-16799 vulnerability details – vuln.today
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