Overview
CVE-2025-63210 describes a critical authentication bypass vulnerability found in the Newtec Celox UHD devices (models CELOXA504 and CELOXA820) running firmware version celox-21.6.13. This flaw allows an attacker to gain unauthorized Superuser or Operator access to the affected devices without providing valid credentials.
Technical Details
The vulnerability resides in how the Newtec Celox UHD handles authentication requests via the /celoxservice endpoint. An attacker can exploit this issue by intercepting and modifying responses from this endpoint, specifically within the loginWithUserName flow.
By injecting a forged response body during the authentication process, the attacker can manipulate the system into granting them Superuser or Operator privileges. This injected response essentially bypasses the normal authentication checks, allowing unauthorized access to sensitive device functionalities and configurations.
CVSS Analysis
Currently, the CVSS score for CVE-2025-63210 is listed as N/A. However, given the nature of the vulnerability – a complete authentication bypass leading to privilege escalation – it is likely to receive a high CVSS score upon formal assessment. This would likely be a CVSS v3 score in the range of 9.0-10.0, indicating a critical severity.
Possible Impact
The successful exploitation of CVE-2025-63210 can have severe consequences:
- Complete System Compromise: An attacker gaining Superuser access can completely control the affected Newtec Celox UHD device.
- Data Breach: Sensitive data processed or stored by the device could be accessed and exfiltrated.
- Service Disruption: An attacker can disrupt or completely disable the services provided by the device, potentially impacting critical infrastructure.
- Malware Installation: The compromised device can be used as a foothold for further attacks within the network.
Mitigation and Patch Steps
The primary mitigation step is to apply the latest firmware update provided by Newtec. Contact Newtec support or visit their website for the most up-to-date firmware version and instructions on how to apply the update. In the meantime, consider the following:
- Network Segmentation: Isolate the Newtec Celox UHD device from other critical network segments to limit the potential impact of a successful attack.
- Access Control: Review and restrict access to the
/celoxserviceendpoint to only authorized personnel and systems. - Intrusion Detection: Implement intrusion detection systems to monitor network traffic for suspicious activity related to the exploitation of this vulnerability.
References
CVE-2025-63210 Exploit Details (GitHub)
Newtec Official Website
