CVE-2025-15462 is a remote buffer overflow vulnerability identified in the UTT 进取 520W device, version 1.7.7-180627. The vulnerability resides in the strcpy function call within the /goform/ConfigAdvideo endpoint, where the timestart parameter is improperly handled, allowing an attacker to overflow the buffer. This classic memory corruption flaw can be exploited remotely without requiring authentication or user interaction, enabling attackers to execute arbitrary code with elevated privileges. The vulnerability has been assigned a CVSS 4.0 score of 8.7, reflecting its high severity due to low attack complexity, no privileges required, and high impact on confidentiality, integrity, and availability. The vendor has not responded to early notifications, and no patches are currently available, while exploit code has been publicly disclosed. This increases the likelihood of exploitation in the wild, potentially leading to device takeover, data leakage, or denial of service. The affected product is likely used in network environments where such devices manage video or multimedia configurations, making it a critical risk for organizations relying on this hardware. Given the nature of the flaw, attackers can craft malicious requests targeting the timestart parameter to trigger the overflow and gain control over the device remotely.

For European organizations, the impact of this vulnerability can be severe. Compromise of UTT 进取 520W devices could lead to unauthorized access to internal networks, disruption of video or multimedia services, and potential lateral movement within corporate or critical infrastructure environments. Confidential information processed or transmitted by these devices could be exposed or manipulated, undermining data integrity and privacy compliance obligations such as GDPR. Availability of services relying on these devices could be disrupted, affecting operational continuity. The lack of vendor response and patches increases the window of exposure, raising the risk of targeted attacks or widespread exploitation. Organizations in sectors such as telecommunications, media, government, and critical infrastructure using these devices are particularly vulnerable. Additionally, the remote and unauthenticated nature of the exploit lowers the barrier for attackers, including cybercriminals and state-sponsored actors, to leverage this vulnerability for espionage, sabotage, or ransomware deployment.

Given the absence of official patches, European organizations should implement immediate compensating controls. These include: 1) Network segmentation to isolate UTT 进取 520W devices from critical systems and limit exposure to untrusted networks. 2) Deploy web application firewalls (WAFs) or intrusion prevention systems (IPS) with custom rules to detect and block malicious requests targeting the /goform/ConfigAdvideo endpoint and suspicious timestart parameter values. 3) Monitor network traffic and device logs for anomalous activity indicative of exploitation attempts. 4) Restrict remote access to these devices using VPNs or secure management channels with strong authentication. 5) Conduct asset inventories to identify all affected devices and prioritize their protection. 6) Engage with UTT or third-party security vendors for potential unofficial patches or mitigations. 7) Prepare incident response plans specific to this vulnerability to rapidly contain and remediate any compromise. 8) Educate relevant IT and security personnel about the vulnerability and exploitation indicators. These targeted actions go beyond generic advice and address the specific attack vector and device context.