CVE-2026-10180 in TEW-432BRP
Summary
by MITRE • 05/31/2026
A vulnerability has been found in TRENDnet TEW-432BRP 3.10B20. Impacted is the function formSysCmd of the file /goform/formSysCmd. Such manipulation of the argument sysCmd leads to command injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor explains: "This product has been EOL for 15 years (since 2009). As the item has been EOL for such a long time, we are not able to replicate or fix any vulnerabilities." This vulnerability only affects products that are no longer supported by the maintainer.
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Analysis
by VulDB Data Team • 06/01/2026
This vulnerability exists in the TRENDnet TEW-432BRP wireless router model running firmware version 3.10B20 and represents a critical command injection flaw within the device's web management interface. The vulnerability is specifically located in the formSysCmd function of the /goform/formSysCmd file, which processes system commands submitted through the web interface. The flaw occurs when the sysCmd argument is not properly sanitized or validated, allowing attackers to inject malicious commands that are then executed by the underlying operating system. This type of vulnerability falls under CWE-77, which specifically addresses command injection vulnerabilities where user-controllable data is passed directly to system execution functions without proper sanitization. The attack vector is remote, meaning an unauthenticated attacker can exploit this vulnerability from outside the network, making it particularly dangerous for devices accessible from the internet. The vulnerability has been publicly disclosed and is actively being used in the wild, indicating that threat actors have already developed working exploits for this specific device model and firmware version. This represents a classic example of an unpatched end-of-life device vulnerability that continues to pose significant security risks to organizations and individuals who have not migrated away from these legacy systems.
The operational impact of this vulnerability is severe and multifaceted, as it allows complete compromise of the affected router. An attacker who successfully exploits this command injection vulnerability can execute arbitrary system commands with the privileges of the web server process, typically equivalent to root access on the device. This access enables attackers to modify network configurations, redirect traffic through DNS hijacking or transparent proxying, install persistent backdoors, or even use the compromised device as a pivot point to attack other systems within the local network. The vulnerability creates a persistent threat vector that can be exploited repeatedly without requiring additional authentication or physical access to the device. From an attacker's perspective, this represents a low-effort, high-impact attack that can be executed through standard web browser interfaces, making it particularly attractive for automated exploitation campaigns. The fact that the vendor has declared this product EOL for 15 years since 2009 means no official security updates or patches are available, leaving affected users with no legitimate path to remediate the vulnerability. This situation exemplifies the risks associated with maintaining legacy network equipment and demonstrates how security vulnerabilities in end-of-life products can remain exploitable for extended periods, creating persistent attack surfaces that organizations must account for in their security posture.
The mitigation landscape for this vulnerability is severely limited due to the end-of-life status of the affected product. Organizations that have not already migrated away from this device must consider it completely compromised and take immediate action to isolate it from critical network segments or remove it entirely from network operations. Network segmentation through firewalls and access control lists can help limit the potential damage if the device cannot be removed, though this approach does not eliminate the risk of exploitation. The vulnerability demonstrates the critical importance of maintaining up-to-date network equipment and avoiding reliance on legacy systems that no longer receive security updates. From a threat actor perspective, this vulnerability aligns with ATT&CK technique T1059.001 for command and scripting interpreter, specifically the use of system shell commands, and T1071.004 for application layer protocol, as the attack occurs through web-based protocols. The vendor's statement regarding the EOL status reflects a common pattern in the cybersecurity industry where manufacturers cease support for aging products, leaving users vulnerable to known exploits. This case highlights the need for organizations to maintain asset inventories and implement regular security assessments to identify and phase out vulnerable legacy equipment before it becomes a target for exploitation. The continued existence of public exploits for EOL products also demonstrates the importance of network monitoring and intrusion detection systems that can identify attempts to exploit known vulnerabilities in legacy systems.