CVE-2026-41978 Overview
CVE-2026-41978 is a permission control vulnerability affecting the clone module in Huawei laptop products. The flaw stems from improper assignment of permissions to a critical resource [CWE-275]. Successful exploitation may affect service confidentiality on the targeted device.
The vulnerability requires local access and user interaction to exploit. An attacker with local access can leverage the weak permission assignment in the clone module to access information that should be restricted. The issue is documented in the Huawei Laptop Security Bulletin.
Critical Impact
Local attackers may obtain restricted information by abusing improperly assigned permissions in the clone module, with limited impact on confidentiality and availability.
Affected Products
- Huawei laptop products referenced in the June 2026 security bulletin
- Clone module component on affected Huawei devices
- Specific product versions enumerated in the vendor advisory
Discovery Timeline
- 2026-06-09 - CVE-2026-41978 published to NVD
- 2026-06-09 - Last updated in NVD database
Technical Details for CVE-2026-41978
Vulnerability Analysis
The vulnerability resides in the clone module on affected Huawei laptops. The clone module handles data duplication operations and assigns permissions to resources it creates or accesses. The flaw is classified under [CWE-275] (Permission Issues), indicating that the module fails to apply correct permission constraints to a sensitive resource.
Exploitation requires local access to the device and user interaction. An attacker leverages the misassigned permissions to read data that should be restricted to higher-privileged contexts. The impact is limited to partial confidentiality loss and partial availability impact, with no integrity impact reported.
The scope remains unchanged, meaning the vulnerability does not allow the attacker to break out of the security boundary of the affected component. No public proof-of-concept code is available, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.
Root Cause
The root cause is improper permission assignment within the clone module. When the module operates on protected resources, it does not enforce the access controls required to prevent lower-privileged users from interacting with those resources. This violates the principle of least privilege.
Attack Vector
An attacker requires local access and must induce a user to perform an action. Once these conditions are met, the attacker invokes the clone module in a way that exposes data protected by access controls. The vulnerability cannot be triggered remotely and does not require elevated privileges to initiate.
No verified exploit code is publicly available. Technical specifics beyond the vendor bulletin have not been disclosed. Refer to the Huawei Laptop Security Bulletin for vendor-supplied details.
Detection Methods for CVE-2026-41978
Indicators of Compromise
- Unexpected invocations of the clone module by non-administrative local user accounts
- Access attempts to protected resources originating from the clone module process context
- Anomalous file or data duplication activity on Huawei laptop endpoints
Detection Strategies
- Monitor process creation and command-line activity associated with the clone module on Huawei laptops
- Audit file system permission changes and access patterns to sensitive directories triggered by clone operations
- Correlate user interaction events with clone module activity to identify potential exploitation chains
Monitoring Recommendations
- Enable endpoint logging for local process execution and parent-child process relationships
- Track read access to sensitive configuration files and user data on affected devices
- Alert on clone module activity that occurs outside of expected administrative workflows
How to Mitigate CVE-2026-41978
Immediate Actions Required
- Apply the security update published in the June 2026 Huawei Laptop Security Bulletin to all affected devices
- Inventory Huawei laptop endpoints to identify systems requiring the patch
- Restrict local access on affected devices to trusted users until the patch is deployed
Patch Information
Huawei published the fix in the June 2026 Huawei Laptop Security Bulletin. Administrators should consult the Huawei Laptop Security Bulletin to identify the specific firmware or software version that addresses CVE-2026-41978 and deploy it across affected endpoints.
Workarounds
- Limit local logon rights on affected laptops to administrators only
- Educate users to avoid interacting with untrusted prompts or files that could trigger the clone module
- Apply application control policies to restrict execution of the clone module to authorized users
# Configuration example
# Review local user accounts and remove unnecessary interactive logon rights
net user
net localgroup Users
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
