CVE-2025-50609 in WF2880
Summary
by MITRE • 08/13/2025
A buffer overflow vulnerability has been discovered in Netis WF2880 v2.1.40207 in the Function_00465620 of the cgitest.cgi file. Attackers can trigger this vulnerability by controlling the value of specify_parame in the payload, which can cause the program to crash and potentially lead to a Denial of Service (DoS) attack.
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Analysis
by VulDB Data Team • 08/15/2025
The buffer overflow vulnerability identified as CVE-2025-50609 represents a critical security flaw within the Netis WF2880 router firmware version 2.1.40207. This vulnerability specifically resides within the cgitest.cgi web interface component and is triggered through the Function_00465620 routine. The affected device operates a web server that processes incoming requests through CGI scripts, making it susceptible to malicious input manipulation. The vulnerability manifests when an attacker crafts a specially crafted payload that includes a controlled value for the specify_parame parameter, which directly influences the vulnerable function's memory handling behavior.
The technical exploitation of this buffer overflow occurs when the specify_parame parameter exceeds the allocated buffer size within the Function_00465620 routine. This condition creates a classic stack-based buffer overflow scenario where excess data overwrites adjacent memory locations including return addresses and control structures. The vulnerability is categorized as CWE-121 Stack-based Buffer Overflow, which falls under the broader category of memory safety issues that have been consistently identified as high-risk threats in cybersecurity assessments. The attack vector leverages the web interface's insufficient input validation mechanisms, allowing attackers to bypass normal parameter checking and directly manipulate the program's execution flow.
From an operational perspective, this vulnerability presents significant risks to network infrastructure security as it enables remote attackers to execute Denial of Service attacks against the affected routers. The crash condition triggered by the buffer overflow can cause the router's web interface to become unresponsive, effectively cutting off administrative access and disrupting network connectivity for all connected devices. The impact extends beyond simple service disruption as these devices often serve as primary gateways for network traffic, making their compromise particularly damaging to network availability. The vulnerability's remote exploitability means that attackers do not require physical access or network proximity to trigger the malicious payload, making it a severe threat to network administrators who rely on these devices for their network infrastructure.
Mitigation strategies for CVE-2025-50609 should prioritize immediate firmware updates from Netis to address the underlying buffer overflow condition. Network administrators should implement network segmentation and access control measures to limit exposure of these devices to untrusted networks. The implementation of web application firewalls and intrusion detection systems can help detect and block malicious payloads targeting this specific vulnerability. Additionally, monitoring for unusual traffic patterns or repeated connection attempts to the cgitest.cgi endpoint should be established as part of routine security operations. According to ATT&CK framework, this vulnerability maps to T1210 Exploitation of Remote Services and T1499 Endpoint Denial of Service, highlighting the multi-faceted attack surface and the need for comprehensive defensive measures. Organizations should also consider implementing network access controls that restrict direct access to administrative interfaces and establish regular vulnerability scanning protocols to identify similar issues in other network equipment.