Overview
A critical security vulnerability, identified as CVE-2025-65883, has been discovered in the Genexis Platinum P4410 router running firmware version P4410-V2–1.41. This vulnerability allows a local network attacker to execute arbitrary code with root privileges on the affected device. The root cause is improper session invalidation after an administrator logs out of the router’s management interface.
Technical Details
The vulnerability stems from the router’s failure to properly invalidate the administrator’s session token upon logout. Specifically, after an administrator logs out, the session token remains valid and active. An attacker with access to the local network can intercept or guess this stale session token. By reusing this token, the attacker can then send crafted requests to the router’s diagnostic endpoint. These crafted requests, authenticated with the stale token, enable the attacker to execute commands as the root user, effectively gaining full control of the router.
This exploit leverages a weakness in the router’s authentication mechanism combined with the diagnostic endpoint’s functionality.
CVSS Analysis
Currently, a CVSS score and severity rating have not been assigned to CVE-2025-65883. However, considering the potential for Remote Code Execution with root privileges, the severity is likely to be rated as Critical. Further analysis is required to determine the exact CVSS score, taking into account factors such as attack vector, attack complexity, privileges required, user interaction, scope, confidentiality impact, integrity impact, and availability impact.
Possible Impact
The exploitation of CVE-2025-65883 can have severe consequences:
- Complete System Compromise: An attacker gains root access, allowing them to fully control the router’s functionality.
- Data Theft: Sensitive data passing through the router can be intercepted and stolen.
- Malware Installation: The router can be used as a platform to install malware that spreads to other devices on the network.
- Network Disruption: The attacker can disrupt network services, causing outages and preventing users from accessing the internet.
- Botnet Recruitment: The compromised router can be recruited into a botnet for malicious activities such as DDoS attacks.
Mitigation and Patch Steps
Until an official patch is released by Genexis, the following mitigation steps are recommended:
- Monitor Network Traffic: Closely monitor network traffic for suspicious activity originating from the router.
- Restrict Network Access: Limit access to the router’s management interface to trusted devices only. Consider using a separate VLAN for the router’s management interface.
- Strong Passwords: Ensure the administrator password is strong and complex. Regularly change the password.
- Disable Remote Access: If possible, disable remote access to the router’s management interface.
- Stay Informed: Monitor Genexis’s website and security advisories for updates and patch releases.
- Apply Firmware Updates: Once a patch is available, immediately apply the latest firmware update provided by Genexis. Check the Genexis support site regularly.
It is crucial to apply the official patch as soon as it becomes available to completely address the vulnerability.
