CVE-2026-18898 in HiPER 1200GW
Summary
by MITRE • 08/05/2026
A security flaw has been discovered in UTT HiPER 1200GW up to v2.5.3-170306. This affects the function strcpy of the file /goform/ConfigAdvideo. The manipulation of the argument timestart results in stack-based buffer overflow. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
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Analysis
by VulDB Data Team • 08/05/2026
The UTT HiPER 1200GW router series represents a network infrastructure device that handles various configuration parameters through web-based interfaces, making it a critical component in enterprise and residential networking environments. This particular vulnerability affects firmware versions up to v2.5.3-170306, indicating a long-standing issue that has persisted across multiple releases without adequate vendor response. The affected component resides within the /goform/ConfigAdvideo file, which suggests this is part of the device's administrative configuration interface designed to manage video-related settings and parameters.
The technical flaw manifests through improper input validation within the strcpy function, which is a classic example of a buffer overflow vulnerability. When processing the timestart argument parameter, the system fails to properly check the length of incoming data before copying it into a fixed-size buffer on the stack. This fundamental programming error allows an attacker to overwrite adjacent memory locations, potentially leading to arbitrary code execution or system instability. The stack-based nature of this overflow means that the vulnerability can be exploited by carefully crafting input data that exceeds the allocated buffer space, causing the program to overwrite return addresses and other critical stack variables.
The remote exploitability of this vulnerability presents significant operational risks as it allows attackers to compromise devices without requiring physical access or local network presence. The fact that public exploits have been released increases the likelihood of widespread exploitation across networks utilizing affected firmware versions. Network infrastructure devices like the UTT HiPER 1200GW serve as critical entry points for attackers seeking to establish persistent access within networks, making this vulnerability particularly dangerous in enterprise environments where such devices often form part of core network infrastructure. The lack of vendor response after early disclosure indicates potential security negligence or inadequate vulnerability management processes that leave users exposed to ongoing threats.
This vulnerability aligns with CWE-121 Stack-based Buffer Overflow and represents a clear violation of secure coding practices, particularly those outlined in the OWASP Top Ten and NIST SP 800-53 security controls. The attack vector corresponds to MITRE ATT&CK techniques related to exploitation of vulnerabilities and privilege escalation within network infrastructure. Organizations should immediately implement network segmentation to isolate affected devices, deploy intrusion detection systems to monitor for exploitation attempts, and develop emergency patching procedures. The absence of vendor response underscores the importance of proactive security measures and highlights the need for organizations to maintain independent vulnerability assessment capabilities rather than relying solely on vendor-provided security updates. Regular firmware audits and penetration testing of network infrastructure components remain essential defensive strategies against such critical vulnerabilities that can provide attackers with significant operational advantages within target networks.