EUVD-2025-204269

Comprehensive Technical Analysis of EUVD-2025-204269

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2025-204269 pertains to a lack of validation in the langGet parameter within the adm.cgi endpoint of the WODESYS WD-R608U router (also known as WDR122B V2.0 and WDR28). This flaw allows a malicious attacker to execute system shell commands, effectively granting them control over the device.

Severity Evaluation:

• Base Score: 9.4 (CVSS 4.0)
• Base Score Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

The high base score indicates a critical vulnerability due to the potential for complete system compromise, including confidentiality, integrity, and availability impacts. The attack vector (AV:A) suggests that the attacker needs to be adjacent to the network, but the low attack complexity (AC:L) and the lack of required privileges (PR:N) or user interaction (UI:N) make it highly exploitable.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Adjacent Network Attack: An attacker on the same local network can exploit the vulnerability by sending crafted requests to the adm.cgi endpoint.
• Remote Attack: If the router's web interface is exposed to the internet, remote attackers can exploit this vulnerability.

Exploitation Methods:

• Command Injection: By manipulating the langGet parameter, an attacker can inject shell commands that the router will execute. This can lead to arbitrary code execution, data exfiltration, or further compromise of the network.
• Automated Scripts: Attackers can use automated scripts to scan for vulnerable routers and exploit them en masse.

3. Affected Systems and Software Versions

Affected Systems:

• WODESYS WD-R608U router
• WDR122B V2.0
• WDR28

Affected Versions:

• Confirmed vulnerable version: WDR28081123OV1.01
• Other versions might also be vulnerable but were not tested.

4. Recommended Mitigation Strategies

Immediate Mitigation:

• Network Segmentation: Isolate the router from critical network segments to limit the potential impact of an attack.
• Firewall Rules: Implement strict firewall rules to restrict access to the router's web interface.
• Firmware Update: If available, update the router firmware to a version that addresses this vulnerability.

Long-Term Mitigation:

• Regular Patching: Ensure that all network devices are regularly updated with the latest security patches.
• Intrusion Detection Systems (IDS): Deploy IDS to monitor for suspicious activity targeting the adm.cgi endpoint.
• Security Audits: Conduct regular security audits to identify and mitigate similar vulnerabilities.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to European organizations and individuals using the affected WODESYS routers. Given the critical nature of the vulnerability, successful exploitation could lead to widespread network compromises, data breaches, and potential disruptions in critical infrastructure. The lack of vendor response further exacerbates the risk, as users may remain unaware of the vulnerability and its potential impact.

6. Technical Details for Security Professionals

Vulnerability Details:

• Endpoint: adm.cgi
• Parameter: langGet
• Exploit: Lack of validation allows for command injection.

Detection and Response:

• Log Analysis: Monitor router logs for unusual activity related to the adm.cgi endpoint.
• Behavioral Analysis: Use behavioral analysis tools to detect anomalous behavior indicative of command injection attempts.
• Incident Response: Develop an incident response plan that includes steps for isolating affected routers, patching vulnerabilities, and conducting forensic analysis to determine the extent of the compromise.

References:

• NVD Entry
• CERT-PL Post
• GitHub Security Research
• WODESYS Product Page

Aliases:

• CVE-2025-65008
• GHSA-v59c-cfx2-53vc

Assigner:

• CERT-PL

ENISA IDs:

• Product:
  • WDR122B V2.0 (WDR28081123OV1.01)
  • WDR28 (WDR28081123OV1.01)
  • WD-R608U (WDR28081123OV1.01)
• Vendor: WODESYS

This comprehensive analysis underscores the critical nature of the vulnerability and the urgent need for mitigation strategies to protect against potential exploitation.