Overview
CVE-2025-63207 is a critical security vulnerability affecting R.V.R Elettronica TEX products using firmware version TEXL-000400 and Web GUI version TLAN-000400. This vulnerability allows an unauthenticated attacker to change the Admin, Operator, and User passwords via the /_Passwd.html endpoint. Successful exploitation leads to complete system compromise.
Published on 2025-11-19T18:15:48.793, this flaw highlights the importance of robust access control mechanisms in embedded devices.
Technical Details
The vulnerability resides in the lack of proper authentication checks on the /_Passwd.html endpoint. The R.V.R Elettronica TEX device fails to verify the identity of the user making a POST request to this endpoint. Consequently, an attacker can craft a malicious POST request containing new passwords for the Admin, Operator, and User accounts. By sending this request to the vulnerable endpoint, the attacker can overwrite the existing passwords without needing any prior authentication or knowledge of the current credentials.
This broken access control allows for full administrative control of the device by a malicious actor.
CVSS Analysis
Currently, the CVSS score for CVE-2025-63207 is listed as N/A. However, given the severity of the vulnerability – complete system compromise via unauthorized password changes – it is highly likely that a CVSS score, once assigned, will be in the Critical range (9.0-10.0).
A critical CVSS score would reflect the ease of exploitation (no authentication required), the widespread impact (potential compromise of the entire system), and the high level of privilege gained by the attacker.
Possible Impact
The exploitation of CVE-2025-63207 can lead to severe consequences, including:
- Complete System Compromise: An attacker gains full administrative access to the R.V.R Elettronica TEX device.
- Data Theft: Sensitive data stored or transmitted by the device can be accessed and exfiltrated.
- System Manipulation: The attacker can modify device configurations, install malware, or use the compromised device as a pivot point to attack other systems on the network.
- Denial of Service (DoS): The attacker can render the device unusable by disrupting its functionality.
- Reputational Damage: For organizations relying on these devices, a successful attack can lead to significant reputational damage and financial losses.
Mitigation or Patch Steps
The most effective mitigation is to apply a patch or firmware update provided by R.V.R Elettronica. Until a patch is available, consider the following temporary measures:
- Network Segmentation: Isolate the R.V.R Elettronica TEX device on a separate network segment to limit the potential impact of a successful attack.
- Access Control Lists (ACLs): Implement ACLs to restrict access to the
/_Passwd.htmlendpoint to only authorized IP addresses or networks (if possible). - Web Application Firewall (WAF): Deploy a WAF that can detect and block malicious requests targeting the vulnerable endpoint. Note: This is a complex workaround and may not be feasible in all environments.
- Monitor Network Traffic: Monitor network traffic for suspicious activity, such as unauthorized attempts to access the
/_Passwd.htmlendpoint.
Contact R.V.R Elettronica Support: Reach out to R.V.R Elettronica support for official guidance and to inquire about the availability of a patch. Monitor their website for security advisories.
