CVE-2026-2904 identifies a critical buffer overflow vulnerability in the UTT HiPER 810G device, version 1.7.7-171114. The vulnerability resides in the strcpy function used in the /goform/ConfigExceptAli endpoint, which improperly handles input data, allowing an attacker to overflow the buffer. This flaw can be exploited remotely over the network without requiring authentication or user interaction, making it highly accessible to attackers. The buffer overflow can lead to memory corruption, potentially enabling remote code execution or causing denial of service conditions. The vulnerability was publicly disclosed shortly after being reserved, and while no confirmed exploits are currently observed in the wild, the availability of exploit code increases the risk of imminent attacks. The CVSS 4.0 vector indicates network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:L), no user interaction (UI:N), and high impact on confidentiality, integrity, and availability (VC:H/VI:H/VA:H). This suggests that an attacker with limited privileges on the network could fully compromise the device. The affected product, UTT HiPER 810G, is likely used in telecommunications or enterprise network environments, making the vulnerability a significant threat to network infrastructure security. No official patches are currently linked, emphasizing the need for interim mitigations.

The impact of CVE-2026-2904 is substantial for organizations relying on UTT HiPER 810G devices. Successful exploitation can lead to complete compromise of the affected device, allowing attackers to execute arbitrary code, disrupt network services, or pivot to other internal systems. This threatens confidentiality by exposing sensitive configuration or network data, integrity by allowing unauthorized changes, and availability by causing device crashes or service outages. Given the device’s probable role in network infrastructure, exploitation could disrupt critical communications or data flows. The remote, unauthenticated nature of the attack vector increases the likelihood of exploitation, especially in environments with exposed management interfaces or insufficient network segmentation. Organizations in telecommunications, government, and enterprises using this device face risks of espionage, sabotage, or ransomware attacks leveraging this vulnerability. The lack of current patches and public exploit code availability further elevates the threat level globally.

1. Immediately restrict network access to the UTT HiPER 810G device, especially to the /goform/ConfigExceptAli endpoint, using firewalls or access control lists to limit exposure to trusted management networks only. 2. Implement network segmentation to isolate vulnerable devices from general user and internet-facing networks. 3. Monitor network traffic and device logs for unusual activity or attempts to access the vulnerable endpoint. 4. Engage with UTT vendor support to obtain official patches or firmware updates addressing this vulnerability; prioritize deployment once available. 5. If patches are not yet available, consider temporary mitigations such as disabling or restricting the vulnerable service or endpoint if feasible. 6. Conduct thorough vulnerability scanning and penetration testing to identify any exploitation attempts. 7. Maintain up-to-date backups and incident response plans to quickly recover from potential compromise. 8. Educate network administrators about the vulnerability and ensure strict credential management to prevent privilege escalation.