CVE-2024-55024: Weintek Easyweb Auth Bypass Vulnerability

CVE-2024-55024 Overview

CVE-2024-55024 is an authentication bypass vulnerability in the authorization mechanism of Weintek cMT-3072XH2 easyweb v2.1.53, OS v20231011. This vulnerability allows unauthorized attackers to perform administrative actions using service accounts, effectively bypassing authentication controls designed to protect the device's management interface.

Critical Impact

Unauthorized attackers can bypass authentication and execute administrative actions on vulnerable Weintek HMI devices, potentially leading to complete system compromise in industrial control environments.

Affected Products

• Weintek Easyweb v2.1.53
• Weintek cMT-3072XH2 Firmware (OS v20231011)
• Weintek cMT-3072XH2 Hardware

Discovery Timeline

• 2026-03-03 - CVE-2024-55024 published to NVD
• 2026-03-04 - Last updated in NVD database

Technical Details for CVE-2024-55024

Vulnerability Analysis

This authentication bypass vulnerability (CWE-693: Protection Mechanism Failure) exists within the authorization mechanism of the Weintek cMT-3072XH2 human-machine interface (HMI) device running the Easyweb web interface. The vulnerability allows attackers to circumvent authentication controls entirely, gaining the ability to perform administrative operations without providing valid credentials.

The Weintek cMT-3072XH2 is an industrial HMI commonly deployed in operational technology (OT) environments for controlling and monitoring industrial processes. The authentication bypass affects the device's web-based management interface, which is accessible over the network. When exploited, attackers can leverage service account functionality to execute privileged operations that should be restricted to authenticated administrators.

The network-accessible nature of this vulnerability combined with the lack of required user interaction makes it particularly dangerous in industrial environments where these devices control critical processes.

Root Cause

The root cause is a protection mechanism failure (CWE-693) in the authorization logic of the Easyweb interface. The system fails to properly validate authorization for service account operations, allowing unauthenticated users to execute administrative functions that should require proper authentication and authorization checks.

Attack Vector

The attack vector is network-based, requiring no privileges or user interaction. An attacker with network access to the vulnerable Weintek cMT-3072XH2 device can exploit the authentication bypass by crafting requests that leverage the flawed authorization mechanism for service accounts. This allows the attacker to perform administrative actions such as modifying device configurations, altering control parameters, or potentially disrupting industrial processes managed by the HMI.

Technical details regarding the exploitation methodology can be found in the GitHub Gist PoC Example and the Notion Project Analysis Document.

Detection Methods for CVE-2024-55024

Indicators of Compromise

• Unexpected administrative configuration changes on Weintek cMT-3072XH2 devices
• Authentication logs showing service account operations without corresponding valid login events
• Network traffic to the Easyweb interface from unauthorized IP addresses
• Anomalous access patterns to the device management interface outside of normal maintenance windows

Detection Strategies

• Monitor network traffic for unauthenticated requests to the Easyweb management interface on Weintek devices
• Implement network intrusion detection rules to identify exploitation attempts targeting the authorization mechanism
• Review device audit logs for administrative actions performed without proper authentication sequences
• Deploy behavioral analysis to detect unauthorized configuration changes on HMI devices

Monitoring Recommendations

• Enable verbose logging on Weintek cMT-3072XH2 devices and forward logs to a centralized SIEM
• Implement network segmentation monitoring to detect cross-zone access attempts to OT devices
• Configure alerts for any administrative operations performed outside of scheduled maintenance windows
• Establish baseline behavior profiles for HMI device communications and alert on deviations

How to Mitigate CVE-2024-55024

Immediate Actions Required

• Isolate vulnerable Weintek cMT-3072XH2 devices from untrusted network segments immediately
• Implement strict network access controls limiting connectivity to the Easyweb interface to authorized management stations only
• Review device configurations and audit logs for signs of unauthorized access or modifications
• Contact Weintek support for guidance on available patches or firmware updates

Patch Information

Organizations should check with Weintek for security updates addressing CVE-2024-55024. The affected versions include Easyweb v2.1.53 and firmware OS v20231011. Monitor Weintek's official channels and the Notion Project Analysis Document for patch availability announcements.

Workarounds

• Deploy the device behind a firewall that restricts access to the Easyweb interface to authorized IP addresses only
• Implement VPN requirements for all remote access to industrial network segments containing vulnerable devices
• Disable the Easyweb interface if not required for operations until a patch is available
• Apply defense-in-depth controls including network segmentation between IT and OT environments

# Example firewall rule to restrict access to Weintek Easyweb interface
# Allow only authorized management stations (replace with actual IPs)
iptables -A INPUT -p tcp --dport 80 -s 192.168.10.50 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -s 192.168.10.50 -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP