CVE-2025-15461 is a remote buffer overflow vulnerability affecting UTT 进取 520W firmware version 1.7.7-180627. The vulnerability arises from improper handling of input in the strcpy function called within the /goform/formTaskEdit endpoint, specifically when processing the selDateType parameter. Since strcpy does not perform bounds checking, an attacker can supply an overly long input string, causing a buffer overflow. This overflow can corrupt adjacent memory, potentially allowing arbitrary code execution or crashing the device. The vulnerability is remotely exploitable without authentication or user interaction, increasing its risk profile. The CVSS 4.0 vector indicates network attack vector, low attack complexity, no privileges required, no user interaction, and high impact on confidentiality, integrity, and availability. Despite the exploit being publicly available, no active exploitation has been reported. The vendor was notified but has not issued a patch or response, leaving devices exposed. The affected product is a network device likely used in specific regional markets, and the lack of vendor response heightens the urgency for organizations to implement mitigations.

The vulnerability allows remote attackers to execute arbitrary code or cause denial of service on affected UTT 进取 520W devices. This can lead to full compromise of the device, enabling attackers to intercept, modify, or disrupt network traffic, potentially pivoting to other internal systems. Confidentiality is at risk due to possible data leakage or interception. Integrity can be compromised by unauthorized modification of device configurations or injected malicious payloads. Availability may be impacted through device crashes or reboots triggered by the overflow. Organizations relying on these devices for critical network functions could face operational disruptions, data breaches, or lateral movement by attackers. The absence of vendor patches and the public availability of exploits increase the likelihood of exploitation attempts, especially in environments where these devices are deployed at scale.

Since no official patch is available, organizations should immediately implement network-level mitigations. Restrict access to the management interface of UTT 进取 520W devices by applying strict firewall rules to limit exposure to trusted IP addresses only. Disable or restrict remote management features if not required. Monitor network traffic for unusual requests targeting /goform/formTaskEdit, especially those containing abnormal or oversized selDateType parameters. Employ intrusion detection/prevention systems (IDS/IPS) with signatures or heuristics capable of detecting buffer overflow attempts against this endpoint. Consider network segmentation to isolate vulnerable devices from critical infrastructure. If feasible, replace or upgrade devices to versions not affected by this vulnerability or from vendors with active security support. Maintain regular backups of device configurations to enable rapid recovery in case of compromise. Engage with UTT or third-party security vendors for potential unofficial patches or workarounds.