CVE-2025-63207 identifies a critical security vulnerability in the R.V.R Elettronica TEX product, specifically in firmware version TEXL-000400 and Web GUI version TLAN-000400. The vulnerability stems from broken access control due to improper authentication checks on the /_Passwd.html endpoint. This endpoint is responsible for managing password changes for Admin, Operator, and User accounts. Because the authentication mechanism is flawed or missing, an attacker can send unauthenticated HTTP POST requests directly to this endpoint and alter the passwords of all user roles. This effectively grants the attacker full administrative control over the device without needing any prior credentials or user interaction. The vulnerability is classified under CWE-287 (Improper Authentication). The CVSS v3.1 base score is 9.8, reflecting its critical nature with attack vector as network (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), and high impact on confidentiality, integrity, and availability (C:H/I:H/A:H). The exploitability is straightforward, requiring only network access to the device's web interface. No patches or fixes have been published yet, and no known exploits have been reported in the wild, but the risk of exploitation is significant given the ease of attack and impact. This vulnerability could lead to complete system compromise, allowing attackers to manipulate device configurations, intercept or alter data, disrupt operations, or pivot into connected networks.

For European organizations, the impact of CVE-2025-63207 is substantial. Organizations using R.V.R Elettronica TEX products in critical infrastructure, industrial control systems, or enterprise environments face the risk of unauthorized full administrative access to these devices. This can lead to data breaches, operational disruptions, and potential sabotage. Confidentiality is compromised as attackers can access sensitive configuration and operational data. Integrity is at risk since attackers can alter device settings or firmware, potentially introducing persistent backdoors or causing malfunctions. Availability can be impacted through denial-of-service conditions or device lockout by changing passwords. The vulnerability’s network-based exploitation means attackers can target devices remotely if exposed to the internet or accessible via internal networks. European sectors such as manufacturing, energy, transportation, and utilities that rely on these devices for automation and control are particularly vulnerable. The lack of available patches increases the window of exposure, necessitating immediate defensive actions to prevent exploitation.

1. Immediately isolate R.V.R Elettronica TEX devices from untrusted networks and restrict access to the management interface to trusted administrators only via network segmentation and firewall rules. 2. Implement strict access control lists (ACLs) to limit which IP addresses can reach the /_Passwd.html endpoint. 3. Monitor network traffic for unauthorized POST requests targeting the /_Passwd.html endpoint and set up alerts for suspicious activity. 4. Employ intrusion detection/prevention systems (IDS/IPS) with signatures or behavioral rules tailored to detect exploitation attempts of this vulnerability. 5. Regularly audit device configurations and verify password integrity to detect unauthorized changes. 6. Engage with the vendor for updates or patches and apply them promptly once available. 7. Consider deploying multi-factor authentication (MFA) on management interfaces if supported to add an additional layer of security. 8. Maintain comprehensive backups of device configurations to enable rapid recovery if compromise occurs. 9. Educate network and security teams about this vulnerability and ensure incident response plans include scenarios involving device compromise.