CVE-2025-15091 is a buffer overflow vulnerability identified in the UTT 进取 512W device firmware versions up to 1.7.7-171114. The vulnerability arises from improper handling of the importpictureurl parameter in the /goform/formPictureUrl endpoint, where the strcpy function is used without bounds checking. This allows an attacker to send a specially crafted request that overflows the buffer, potentially overwriting adjacent memory and enabling arbitrary code execution. The attack vector is remote network access, requiring no authentication or user interaction, which significantly increases the risk. The vulnerability affects the confidentiality, integrity, and availability of the device, as an attacker could execute malicious code, disrupt device functionality, or pivot into internal networks. The CVSS 4.0 score of 8.7 reflects the high severity, with low attack complexity and no privileges required. Although no known exploits are currently active in the wild, the public disclosure of the vulnerability means attackers could develop exploits rapidly. The lack of an official patch at the time of disclosure necessitates immediate mitigation through network-level controls and monitoring. The affected product is commonly used in networking environments, potentially including industrial and enterprise settings, making the impact broad and critical.

For European organizations, this vulnerability poses a significant risk, especially those relying on UTT 进取 512W devices for network connectivity or industrial control. Successful exploitation could lead to full device compromise, enabling attackers to intercept or manipulate sensitive data, disrupt network operations, or use the device as a foothold for further attacks. This could result in operational downtime, data breaches, and loss of trust. Critical infrastructure sectors such as manufacturing, energy, and telecommunications are particularly vulnerable due to their reliance on stable and secure network devices. The remote and unauthenticated nature of the exploit increases the likelihood of attacks originating from external threat actors, including cybercriminals and state-sponsored groups. The absence of a patch at disclosure time means organizations must rely on compensating controls, increasing operational complexity and risk. Overall, the vulnerability could lead to severe financial, reputational, and regulatory consequences for affected European entities.

1. Immediately isolate UTT 进取 512W devices from untrusted networks and restrict access to management interfaces using firewalls or network segmentation. 2. Monitor network traffic for unusual requests targeting the /goform/formPictureUrl endpoint, especially those containing suspicious importpictureurl parameters. 3. Implement strict access control lists (ACLs) to limit which IP addresses can communicate with the affected devices. 4. Deploy intrusion detection/prevention systems (IDS/IPS) with signatures or heuristics to detect buffer overflow attempts against this endpoint. 5. Engage with UTT vendor support channels to obtain firmware updates or patches as soon as they become available and prioritize their deployment. 6. Conduct regular security audits and vulnerability assessments on network devices to identify and remediate similar issues proactively. 7. Educate network administrators about this vulnerability and the importance of applying mitigations promptly. 8. Consider temporary replacement or additional protective layers for critical devices until patches are applied.