Hiper 1250Gw CVE-2026-5544

Authenticated attacker with login credentials to UTT HiPER 1250GW firmware versions up to 3.2.7-210907-180535. Remote exploitation via POST request to /goform/formRemoteControl with oversized Profile parameter triggers stack buffer overflow.

Real-world risk assessment reveals moderate-high urgency requiring prioritization for affected deployments. CVSS 8.8 accurately reflects severe potential impact (complete system compromise across confidentiality, integrity, availability) combined with network attack vector (AV:N) and low complexity (AC:L). However, authentication requirement (PR:L) introduces friction absent from unauthenticated remote code execution. EPSS data not provided, but publicly available exploit code (confirmed in references via GitHub POC) significantly elevates exploitation probability beyond theoretical vulnerability disclosure. No CISA KEV listing indicates this has not been observed in active widespread exploitation campaigns, distinguishing it from state-sponsored or ransomware operator tooling. SSVC framework assessment: exploitation status is publicly available exploit code exists; technical impact is total system compromise; automatable potential is moderate given auth gate but high post-authentication. Priority should be immediate patching for internet-facing management interfaces, especially where default/weak credentials may exist. Organizations using these routers for remote workforce VPN termination or branch connectivity face elevated risk if administrative interfaces are exposed to WAN. The exploit's public availability on GitHub lowers barriers for opportunistic scanning and exploitation by less sophisticated threat actors.

An attacker identifies an internet-exposed UTT HiPER 1250GW router through Shodan or similar network scanning, recognizing the web management interface on standard ports. Using credential stuffing with common default passwords (admin/admin, admin/password) or credentials harvested from previous breaches, the attacker authenticates to the administrative panel. Leveraging the publicly available GitHub POC (https://github.com/jinxjinxboom/cve/issues/1), they craft a malicious HTTP request to /goform/formRemoteControl containing an oversized Profile parameter payload designed to overflow the stack buffer and inject shellcode. Successful exploitation grants arbitrary code execution at the router's privilege level, enabling installation of persistent backdoors, traffic interception for credential harvesting, pivoting into internal networks, or recruitment into a botnet for DDoS operations. The low attack complexity (AC:L) and network vector (AV:N) mean exploitation requires only HTTP client capabilities and valid credentials, making this accessible to mid-skill attackers once authentication is obtained.