EUVD-2025-11137

Comprehensive Technical Analysis of EUVD-2025-11137

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2025-11137 allows an attacker to upload an arbitrary file instead of a plant image. This type of vulnerability is commonly referred to as an "unrestricted file upload" vulnerability. The CVSS (Common Vulnerability Scoring System) base score of 9.3 indicates a critical severity level. The scoring vector CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N breaks down as follows:

• AV:N (Attack Vector: Network): The vulnerability can be exploited remotely over the network.
• AC:L (Attack Complexity: Low): The attack requires low complexity to execute.
• AT:N (Attack Technique: Network): The attack technique involves network-based methods.
• PR:N (Privileges Required: None): No privileges are required to exploit the vulnerability.
• UI:N (User Interaction: None): No user interaction is required.
• VC:H (Vulnerability Confidentiality: High): The vulnerability has a high impact on confidentiality.
• VI:H (Vulnerability Integrity: High): The vulnerability has a high impact on integrity.
• VA:H (Vulnerability Availability: High): The vulnerability has a high impact on availability.
• SC:N (Scope Change: None): The vulnerability does not change the security scope.
• SI:N (Scope Integrity: None): The vulnerability does not affect the integrity of the security scope.
• SA:N (Scope Availability: None): The vulnerability does not affect the availability of the security scope.

2. Potential Attack Vectors and Exploitation Methods

The primary attack vector for this vulnerability is the ability to upload arbitrary files to the server. Potential exploitation methods include:

• Uploading Malicious Scripts: An attacker could upload a script (e.g., PHP, JavaScript) that, when executed, could compromise the server.
• Uploading Web Shells: An attacker could upload a web shell to gain remote access to the server.
• Uploading Malware: An attacker could upload malware that could be executed on the server, leading to data exfiltration, ransomware attacks, or other malicious activities.

3. Affected Systems and Software Versions

The vulnerability affects the "Cloud portal" product by Growatt, specifically versions prior to 3.6.0. Organizations using this product within the specified version range are at risk.

4. Recommended Mitigation Strategies

To mitigate this vulnerability, the following strategies are recommended:

• Update Software: Upgrade the "Cloud portal" product to version 3.6.0 or later, which includes a fix for this vulnerability.
• Implement File Upload Restrictions: Ensure that the file upload functionality only accepts specific file types (e.g., image files) and performs thorough validation and sanitization of uploaded files.
• Use Content Security Policies (CSP): Implement CSP to restrict the types of content that can be loaded and executed on the server.
• Regular Security Audits: Conduct regular security audits and vulnerability assessments to identify and address similar vulnerabilities.
• Monitor and Log Activities: Implement robust logging and monitoring to detect and respond to any suspicious file upload activities.

5. Impact on European Cybersecurity Landscape

The impact of this vulnerability on the European cybersecurity landscape is significant due to the critical nature of the affected product. The "Cloud portal" product by Growatt is likely used in various industrial and commercial settings, including critical infrastructure. Exploitation of this vulnerability could lead to data breaches, loss of service availability, and potential disruption of critical operations.

6. Technical Details for Security Professionals

For security professionals, the following technical details are pertinent:

• Detection: Implement intrusion detection systems (IDS) and intrusion prevention systems (IPS) to detect and block unauthorized file upload attempts.
• Response: Develop an incident response plan that includes steps for identifying, containing, and remediating the impact of an exploited file upload vulnerability.
• Prevention: Ensure that all file upload functionalities are secured with proper validation, sanitization, and access controls. Regularly update and patch all software components to address known vulnerabilities.
• Compliance: Ensure compliance with relevant cybersecurity regulations and standards, such as GDPR, to protect sensitive data and maintain the integrity of systems.

Conclusion

The vulnerability described in EUVD-2025-11137 is critical and requires immediate attention from organizations using the affected "Cloud portal" product by Growatt. By implementing the recommended mitigation strategies and adhering to best practices in cybersecurity, organizations can significantly reduce the risk of exploitation and protect their systems and data.