Compliance Impact

The vulnerability in Mender Enterprise Server involves incorrect access control that can lead to unauthorized elevated privileges within device group management. This improper access control could potentially result in unauthorized access to sensitive device data or management functions.

Such unauthorized access could impact compliance with common standards and regulations like GDPR and HIPAA, which require strict access controls and protection of sensitive data. However, the impact is considered limited because the vulnerability requires a specific misconfiguration and mainly affects multi-tenant environments.

To maintain compliance, affected users are advised to upgrade to fixed versions (4.1.1 and 4.0.2) to remediate the access control issue.

Useful 0 Not Useful 0

Executive Summary

CVE-2026-33552 is an improper access control vulnerability in the Device Group Role-Based Access Control (RBAC) system of Mender Server Enterprise versions 4.1.0, 4.0.1, and earlier. When an administrator tries to assign different access levels (Read and Manage) to devices in separate device groups, the system incorrectly grants Manage access to both groups instead of applying the intended permissions.

This flaw can lead to unauthorized elevated privileges because users may gain Manage access where they should only have Read access.

The vulnerability is specific to the enterprise edition of Mender Server and does not affect the Community (Open Source) edition.

Useful 0 Not Useful 0

Impact Analysis

This vulnerability can lead to unauthorized users gaining elevated privileges (Manage access) on device groups where they should only have limited (Read) access.

Such unauthorized access could allow users to perform management actions on devices they are not supposed to control, potentially compromising device security and operational integrity.

The impact is considered limited because it requires a specific misconfiguration by an administrator and is most relevant in multi-tenant environments where different device groups have distinct access controls.

Useful 0 Not Useful 0

Detection Guidance

This vulnerability involves improper access control in the Device Group Role-Based Access Control (RBAC) system of Mender Server Enterprise versions 4.1.0, 4.0.1, and earlier. Detection would involve verifying if device groups have been assigned incorrect Manage access permissions due to this flaw.

Since the issue arises when an administrator attempts to assign different access levels (Read and Manage) to devices across separate device groups but the system incorrectly grants Manage access to both, detection can focus on auditing RBAC permissions for device groups to identify any unintended Manage access.

No specific commands or network detection methods are provided in the available resources.

Useful 0 Not Useful 0

Mitigation Strategies

The primary mitigation step is to upgrade the Mender Enterprise Server to version 4.1.1 or later (or 4.0.2 or later for the 4.0.x branch), where this access control issue has been fixed.

Additionally, review and audit device group permissions to ensure that no unintended Manage access has been granted due to this vulnerability, especially in multi-tenant environments.

Useful 0 Not Useful 0