CVE-2024-51315 in TX9
Summary
by MITRE • 07/21/2026
The Tenda TX9 V22.03.02.20 firmware has a stack overflow vulnerability in the sub_425964 function of the file /goform/SetOnlineDevName
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Analysis
by VulDB Data Team • 07/21/2026
The Tenda TX9 router running firmware version V22.03.02.20 contains a critical stack overflow vulnerability within the sub_425964 function located in the /goform/SetOnlineDevName file. This vulnerability represents a severe security flaw that can be exploited to gain arbitrary code execution on the affected device. The stack overflow occurs when processing user-supplied input through the web interface, specifically in the online device name configuration functionality. The vulnerability stems from insufficient input validation and bounds checking within the function implementation, allowing an attacker to overwrite adjacent stack memory regions with malicious data.
This particular flaw falls under CWE-121 Stack-based Buffer Overflow, which is classified as a critical weakness in software security. The vulnerability allows for remote code execution through crafted HTTP requests sent to the router's web management interface, making it particularly dangerous for network administrators and end users who may not be actively monitoring their device configurations. Attackers can exploit this vulnerability by sending specially crafted payloads that exceed the allocated buffer size, causing a stack overflow condition that can overwrite return addresses and function pointers. The ATT&CK framework categorizes this as a privilege escalation technique under T1068, where an attacker gains higher privileges through exploitation of vulnerable software components.
The operational impact of this vulnerability extends beyond simple remote code execution to potentially compromise the entire network infrastructure managed by the affected router. Once exploited, attackers can gain full control over the device, install malicious firmware, redirect traffic, or establish persistent backdoors for future access. The vulnerability affects all devices running the specified firmware version and potentially impacts thousands of users who have not updated their router software. Network administrators face significant challenges in identifying compromised devices since the exploitation may not produce obvious network anomalies, and the attack can occur without requiring authentication.
Mitigation strategies should include immediate firmware updates from Tenda to address the stack overflow vulnerability, as well as network segmentation to limit exposure of affected devices. Organizations should implement network monitoring solutions to detect unusual traffic patterns that may indicate exploitation attempts, particularly focusing on HTTP requests targeting the /goform/SetOnlineDevName endpoint. The recommended approach involves disabling unnecessary web management interfaces, implementing strong access controls, and regularly auditing device configurations to identify any unauthorized modifications. Additionally, security teams should consider deploying intrusion detection systems that can recognize signatures associated with known exploit patterns for this specific vulnerability, ensuring comprehensive protection against potential attacks targeting the stack overflow flaw.