GO-2026-5002 Windows MDM management endpoint authentication bypass in github.com/fleetdm/fleet/v4

Windows MDM management endpoint authentication bypass in github.com/fleetdm/fleet/v4...

User Impersonation

Overview Affected versions of this package are vulnerable to User Impersonation due to improper validation of JWT aud and iss claims in the Windows MDM authentication flow. An attacker can enroll unauthorized devices by presenting a valid Microsoft-signed Azure AD token from any tenant. This is...

Exposure of Data Element to Wrong Session

Overview Affected versions of this package are vulnerable to Exposure of Data Element to Wrong Session in the MDM command processing while handling SyncML status code. An attacker can obtain sensitive configuration data belonging to other devices such as WiFi credentials, VPN secrets, and...

Exposure of Data Element to Wrong Session

Overview Affected versions of this package are vulnerable to Exposure of Data Element to Wrong Session in the MDM command processing while handling SyncML status code. An attacker can obtain sensitive configuration data belonging to other devices such as WiFi credentials, VPN secrets, and...

CVE-2026-34391

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...

CVE-2026-23518

Fleet is open source device management software. In versions prior to 4.78.3, 4.77.1, 4.76.2, 4.75.2, and 4.53.3, a vulnerability in Fleet's Windows MDM enrollment flow could allow an attacker to submit forged authentication tokens that are not properly validated. Because JWT signatures were not...

Improper Verification of Cryptographic Signature

Overview Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature via the JWT verification process. An attacker can gain unauthorized enrollment of rogue devices by submitting a forged JWT with arbitrary identity claims, as the system fails to verify th...

Improper Verification of Cryptographic Signature

Overview Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature via the JWT verification process. An attacker can gain unauthorized enrollment of rogue devices by submitting a forged JWT with arbitrary identity claims, as the system fails to verify th...

CVE-2022-21992

Windows Mobile Device Management Remote Code Execution Vulnerability...

The vulnerability of the Windows device installation dispatcher allows a perpetrator to execute processes with elevated privileges.

The vulnerability of the Windows device management agent is related to errors in file operations. Exploiting this vulnerability allows an attacker to execute processes with elevated privileges using a specially created application...