CVE-2026-15427 in Archer VX1800v
Summary
by MITRE • 07/14/2026
An OS command injection vulnerability exists in the TR-069 / CWMP management interface of Archer VX1800v v1 due to insufficient input validation and sanitization of parameters, allowing crafted input to be executed as system-level commands. Exploitation requires specific conditions such as TR-069 being enabled and ability to influence ACS-delivered commands, compromise or control an ACS server.
Successful exploitation may allow arbitrary command execution with root privileges, resulting in complete compromise of the device.
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Analysis
by VulDB Data Team • 07/14/2026
The Archer VX1800v v1 router presents a critical operating system command injection vulnerability within its TR-069/CWMP management interface that stems from inadequate input validation and sanitization mechanisms. This vulnerability resides in the device's handling of parameters received through the TR-069 protocol, which is commonly used by Internet Service Providers to remotely manage customer premises equipment. The flaw manifests when the router fails to properly validate or sanitize user-supplied input before incorporating it into system commands, creating an environment where malicious actors can inject arbitrary commands that execute with the highest privileges available to the management interface.
The technical nature of this vulnerability aligns with CWE-77 and CWE-88 categories, representing classic command injection flaws where untrusted data flows directly into operating system commands without proper sanitization. Attackers exploiting this weakness can craft malicious input that bypasses normal parameter validation checks and gets executed as legitimate system commands. The attack vector requires specific preconditions including TR-069 protocol activation on the device and the ability to influence commands delivered by an ACS (Auto Configuration Server) which typically resides within the ISP's infrastructure. This dependency on a compromised or controlled ACS server represents a significant operational requirement that limits the exploitability but does not eliminate the risk entirely.
The operational impact of successful exploitation extends far beyond simple unauthorized access, as the vulnerability allows for arbitrary command execution with root privileges, effectively providing attackers complete control over the device's functionality and underlying operating system. This level of access enables attackers to modify device configurations, extract sensitive information, install persistent backdoors, or use the compromised device as a pivot point for further attacks within the network. The severity classification of this vulnerability places it in the highest risk category according to industry standards, as it directly enables full device compromise without requiring physical access or advanced exploitation techniques.
Mitigation strategies for this vulnerability should focus on multiple defensive layers including immediate firmware updates from the vendor to address the input validation gaps, implementing network segmentation to isolate devices running TR-069 protocols, and establishing strict monitoring of ACS communications. Organizations should also consider disabling TR-069 functionality when not actively required for device management, implementing strict access controls around management interfaces, and conducting regular security assessments of remote management protocols. The ATT&CK framework categorizes this vulnerability under T1059.001 (Command and Scripting Interpreter: PowerShell) and T1021.001 (Remote Services: Remote Desktop Protocol) with potential for lateral movement once initial compromise occurs, making comprehensive network monitoring essential for early detection of exploitation attempts.