CVE-2026-14721 in HiPER 1250GW
Summary
by MITRE • 07/05/2026
A vulnerability has been found in UTT HiPER 1250GW up to 3.2.7-210907-180535. This affects an unknown function of the file /goform/ConfigWirelessBase_5g of the component Web Endpoint. The manipulation of the argument ssid leads to stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used.
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Analysis
by VulDB Data Team • 07/06/2026
The UTT HiPER 1250GW wireless router firmware version 3.2.7-210907-180535 contains a critical stack-based buffer overflow vulnerability in its web interface component. This flaw exists within the /goform/ConfigWirelessBase_5g endpoint which handles wireless configuration parameters, specifically the ssid argument that controls the wireless network name. The vulnerability stems from inadequate input validation and bounds checking when processing user-supplied data through the web form interface. Attackers can exploit this weakness by sending specially crafted requests containing overly long ssid values that exceed the allocated buffer space on the stack, leading to memory corruption and potential arbitrary code execution.
This vulnerability represents a significant security risk as it allows remote exploitation without requiring authentication or physical access to the device. The attack surface is particularly concerning because it targets the web management interface which is typically accessible from external networks. The disclosed exploit demonstrates that malicious actors can leverage this buffer overflow to gain unauthorized control over the router, potentially enabling them to modify network configurations, intercept traffic, redirect users to malicious sites, or establish persistent backdoors. The stack-based nature of the vulnerability means that attackers can overwrite return addresses and function pointers in memory, providing a pathway for privilege escalation and system compromise.
The operational impact of this vulnerability extends beyond simple device compromise as it affects the fundamental security posture of networks relying on UTT HiPER 1250GW devices. Organizations using these routers face potential data breaches, network infiltration, and loss of network control. The vulnerability aligns with CWE-121 Stack-based Buffer Overflow which is classified under the Common Weakness Enumeration framework as a critical software flaw. From an adversary perspective, this vulnerability maps to multiple ATT&CK techniques including T1059 Command and Scripting Interpreter for execution, T1071 Application Layer Protocol for communication, and T1566 Phishing for initial access or persistence mechanisms. Network defenders should consider this vulnerability as part of a broader attack chain that could lead to advanced persistent threats or lateral movement within corporate networks.
The security implications of this flaw underscore the critical importance of firmware updates and regular security assessments for network infrastructure devices. Organizations should immediately implement mitigations including disabling unnecessary web management interfaces, implementing network segmentation, and monitoring for suspicious traffic patterns. Patch management procedures must be prioritized to ensure all affected UTT HiPER 1250GW devices receive the necessary firmware updates from the vendor. Additionally, network administrators should consider deploying intrusion detection systems that can identify exploitation attempts targeting this specific vulnerability, as the public disclosure of the exploit increases the likelihood of automated attacks against unpatched systems. The vulnerability serves as a reminder of the ongoing need for robust input validation and secure coding practices in embedded web interfaces that are exposed to external threats.