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CVE-2021-46834: Permission Bypass in JAD-AL50

Medium
VulnerabilityCVE-2021-46834cvecve-2021-46834
Published: Tue Sep 20 2022 (09/20/2022, 19:45:15 UTC)
Source: CVE Database V5
Vendor/Project: n/a
Product: JAD-AL50

Description

A permission bypass vulnerability in Huawei cross device task management could allow an attacker to access certain resource in the attacked devices. Affected product versions include:JAD-AL50 versions 102.0.0.225(C00E220R3P4).

AI-Powered Analysis

AILast updated: 07/07/2025, 07:55:47 UTC

Technical Analysis

CVE-2021-46834 is a permission bypass vulnerability identified in Huawei's JAD-AL50 device, specifically affecting the cross-device task management component. The vulnerability exists in version 102.0.0.225(C00E220R3P4) of the product. The core issue is that an attacker with limited privileges (low-level privileges) on the device can bypass permission checks to access certain resources that should normally be restricted. This permission bypass does not require user interaction and can be exploited locally (attack vector: local). The vulnerability is classified under CWE-276, which relates to improper permissions or access control. The CVSS v3.1 base score is 5.5, indicating a medium severity level. The vector string (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N) shows that the attack requires local access with low complexity and low privileges, no user interaction, unchanged scope, and results in high confidentiality impact but no impact on integrity or availability. No known exploits have been reported in the wild, and no patches or mitigation links were provided in the source information. This vulnerability could allow an attacker to access sensitive data or resources on the device that should be protected, potentially leading to information disclosure. The lack of integrity or availability impact suggests the vulnerability is primarily a confidentiality concern. Since the attack requires local access and low privileges, it is more likely to be exploited by insiders or malware already present on the device rather than remote attackers. The vulnerability affects a specific Huawei device model, which limits the scope of affected systems but is significant for users of this device version.

Potential Impact

For European organizations, the impact of CVE-2021-46834 depends largely on the deployment and usage of the Huawei JAD-AL50 device within their infrastructure or by employees. If these devices are used to handle sensitive corporate data or are integrated into secure environments, the permission bypass could lead to unauthorized access to confidential information, potentially compromising data privacy and compliance with regulations such as GDPR. The confidentiality breach could expose sensitive business information or personal data, leading to reputational damage and regulatory penalties. However, since the vulnerability requires local access and low privileges, the risk is mitigated if organizations enforce strict device usage policies, endpoint security controls, and limit physical or local access to devices. The absence of integrity and availability impacts reduces the risk of system manipulation or denial of service, but the confidentiality risk remains significant especially in environments where sensitive data is stored or accessed on these devices. European organizations with mobile workforces or BYOD policies that include Huawei JAD-AL50 devices should be particularly cautious. The lack of known exploits in the wild suggests that the threat is currently low but could increase if exploit code becomes available.

Mitigation Recommendations

1. Inventory and Audit: Identify all Huawei JAD-AL50 devices in use within the organization and verify their firmware/software versions to determine if they are running the vulnerable version 102.0.0.225(C00E220R3P4). 2. Restrict Local Access: Enforce strict physical security controls and endpoint access policies to prevent unauthorized local access to devices. 3. Privilege Management: Limit user privileges on devices to the minimum necessary and monitor for privilege escalation attempts. 4. Device Usage Policies: Implement policies restricting the use of vulnerable devices for handling sensitive data or accessing critical systems until patched or mitigated. 5. Network Segmentation: Isolate devices with potential vulnerabilities from critical network segments to reduce lateral movement risk. 6. Monitor for Anomalies: Deploy endpoint detection and response (EDR) solutions to detect unusual access patterns or attempts to bypass permissions on devices. 7. Vendor Engagement: Regularly check Huawei’s official channels for patches or security advisories addressing this vulnerability and apply updates promptly once available. 8. User Awareness: Educate users about the risks of local device compromise and the importance of reporting lost or stolen devices immediately. 9. Alternative Devices: Consider replacing vulnerable devices with alternatives if patching or mitigation is not feasible in the short term.

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Technical Details

Data Version
5.1
Assigner Short Name
huawei
Date Reserved
2022-08-19T00:00:00.000Z
Cvss Version
3.1
State
PUBLISHED

Threat ID: 68373654182aa0cae2538120

Added to database: 5/28/2025, 4:14:12 PM

Last enriched: 7/7/2025, 7:55:47 AM

Last updated: 7/26/2025, 8:02:42 PM

Views: 10

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