CVE-2026-2980 identifies a buffer overflow vulnerability in the UTT HiPER 810G device firmware up to version 1.7.7-1711. The vulnerability arises from improper handling of the passwd1 argument in the strcpy function within the /goform/setSysAdm endpoint. Since strcpy does not perform bounds checking, an attacker can supply an overly long passwd1 value, causing a buffer overflow. This overflow can corrupt memory, potentially allowing remote attackers to execute arbitrary code or cause a denial of service. The attack vector is network-based (AV:N), requiring no user interaction (UI:N), but it requires high privileges (PR:H) to initiate. The vulnerability impacts confidentiality, integrity, and availability at a high level (VC:H, VI:H, VA:H). The vulnerability has been publicly disclosed, increasing the risk of exploitation, although no active exploits have been reported in the wild yet. The lack of segmentation or sandboxing in the affected function increases the severity. The vulnerability is classified with a CVSS 4.0 score of 8.6, indicating high severity. No official patches have been linked yet, so mitigation strategies must be implemented promptly to reduce risk.

The vulnerability allows remote attackers with high privileges to exploit a buffer overflow in the UTT HiPER 810G device, potentially leading to remote code execution or denial of service. This can compromise the confidentiality of sensitive administrative credentials, integrity of device configurations, and availability of the device services. Organizations relying on this device for critical network or security functions may face operational disruptions, unauthorized access, or control takeover. The public disclosure of the exploit code increases the likelihood of attacks, especially targeting unpatched systems. Given the device's role in network infrastructure, exploitation could facilitate lateral movement within networks or serve as a foothold for further attacks. The requirement for high privileges limits the attack surface but does not eliminate risk, especially if credentials are compromised or insider threats exist.

1. Immediately apply any available firmware updates or patches from UTT addressing this vulnerability once released. 2. If patches are not yet available, restrict access to the /goform/setSysAdm endpoint using network segmentation and firewall rules to limit exposure to trusted administrators only. 3. Implement strong authentication and credential management to prevent unauthorized privilege escalation that could enable exploitation. 4. Monitor network traffic and device logs for unusual activity targeting the passwd1 parameter or the /goform/setSysAdm endpoint. 5. Employ intrusion detection/prevention systems (IDS/IPS) with signatures or heuristics to detect attempts to exploit buffer overflow patterns. 6. Conduct regular security audits and penetration testing focusing on administrative interfaces to identify and remediate similar vulnerabilities. 7. Educate administrators on the risks of using default or weak passwords and the importance of promptly applying security updates. 8. Consider deploying application-layer firewalls or web application firewalls (WAFs) that can detect and block malformed requests targeting this vulnerability.