CVE-2025-10171 is a high-severity buffer overflow vulnerability affecting the UTT 1250GW device, specifically versions up to 3.2.2-200710. The flaw resides in the function sub_453DC within the /goform/formConfigApConfTemp file. This vulnerability can be triggered remotely without authentication or user interaction by sending specially crafted requests that manipulate the buffer, leading to overflow conditions. The overflow can corrupt memory, potentially allowing an attacker to execute arbitrary code, cause denial of service, or disrupt device functionality. The vulnerability has a CVSS 4.0 base score of 8.7, reflecting its ease of exploitation (network attack vector, low complexity, no privileges or user interaction required) and its significant impact on confidentiality, integrity, and availability. Although the vendor was notified early, no response or patch has been issued, and a public exploit is available, increasing the risk of exploitation. The lack of vendor response and patch availability means affected organizations must rely on mitigation and detection strategies until an official fix is released.

For European organizations using UTT 1250GW devices, this vulnerability poses a serious risk. Exploitation could lead to unauthorized remote code execution, enabling attackers to gain control over network infrastructure components, intercept or manipulate sensitive data, disrupt network services, or pivot to other internal systems. Given the device's role in network management or connectivity, successful attacks could compromise confidentiality, integrity, and availability of critical communications. This is particularly concerning for sectors with stringent data protection requirements such as finance, healthcare, and government. The public availability of an exploit increases the likelihood of opportunistic attacks, including ransomware or espionage campaigns targeting European entities. The absence of a vendor patch exacerbates the risk, potentially leading to prolonged exposure and increased attack surface.

1. Immediate network segmentation: Isolate UTT 1250GW devices from critical network segments to limit attacker lateral movement if compromised. 2. Implement strict firewall rules to restrict access to the device management interface, allowing only trusted IP addresses and networks. 3. Monitor network traffic for anomalous requests targeting /goform/formConfigApConfTemp or unusual patterns indicative of exploitation attempts. 4. Deploy intrusion detection/prevention systems (IDS/IPS) with signatures or heuristics tailored to detect buffer overflow attempts against this device. 5. Regularly audit device firmware versions and configurations to identify and document affected devices. 6. Engage with UTT or authorized vendors for updates or patches and apply them promptly once available. 7. Consider temporary replacement or removal of vulnerable devices in high-risk environments until a patch is released. 8. Educate network administrators about this vulnerability and encourage vigilance for signs of compromise.