CVE-2026-18895 in HiPER 1250GW
Summary
by MITRE • 08/05/2026
A vulnerability was found in UTT HiPER 1250GW up to 3.2.7-210907-180535. Impacted is the function strcpy of the file /goform/APSecurity_5g. Performing a manipulation of the argument cipher results in stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been made public and could be used. 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
This vulnerability exists in UTT HiPER 1250GW wireless access point firmware versions up to 3.2.7-210907-180535 and represents a critical stack-based buffer overflow flaw in the /goform/APSecurity_5g file. The issue stems from improper handling of the cipher argument within the strcpy function, which lacks proper bounds checking mechanisms. When an attacker manipulates this parameter, the function attempts to copy data into a fixed-size buffer on the stack without validating the input length against the allocated space, creating a condition where excessive data can overwrite adjacent memory locations including return addresses and stack canaries.
The technical implementation of this vulnerability aligns with common software security flaws categorized under CWE-121 Stack-based Buffer Overflow, where insufficient bounds checking allows attackers to overwrite program execution control structures. This particular flaw resides in the wireless access point's management interface, specifically targeting the 5g security configuration functionality through the web form handler. The stack-based nature of the overflow means that attackers can potentially overwrite the saved return address on the stack, allowing for arbitrary code execution or complete system compromise.
The operational impact of this vulnerability is severe as it enables remote exploitation without requiring authentication, making it particularly dangerous in networked environments where wireless access points serve as critical infrastructure components. The public availability of exploit code significantly increases the risk level since malicious actors can readily leverage this flaw to gain unauthorized access to the device. Attackers could potentially execute arbitrary commands on the affected system, establish persistent backdoors, or use the compromised device as a foothold for further network infiltration attacks.
The lack of vendor response following early disclosure represents a critical failure in vulnerability management and security coordination practices. This absence of communication leaves users vulnerable without official patches or mitigation guidance, creating an environment where the exploit remains active and potentially dangerous. Organizations should implement immediate defensive measures including network segmentation to isolate affected devices, disabling unnecessary wireless services when possible, and monitoring for suspicious network activity that might indicate exploitation attempts.
Mitigation strategies should include immediate firmware updates if available through vendor channels, network access control lists to restrict access to management interfaces, and implementing intrusion detection systems to monitor for exploit attempts targeting this specific vulnerability. The flaw demonstrates the importance of proper input validation and secure coding practices as outlined in software security best practices such as those referenced in the OWASP Top Ten and NIST cybersecurity guidelines. Organizations should also consider conducting comprehensive vulnerability assessments of their wireless infrastructure to identify similar insecure functions that may present analogous risks, particularly in embedded systems where memory safety mechanisms are often insufficiently implemented.