Recent discoveries by cybersecurity experts have highlighted five notable security vulnerabilities in the TP-Link Archer AX53 v1.0 router. These flaws, identified under various CVE references, primarily affect the router’s key components, including OpenVPN, dnsmasq, and tmpServer.
Exploiting Core Router Modules
The identified vulnerabilities grant attackers on the same network the ability to run system commands, trigger system failures, and access sensitive configuration files, leading to full device takeover. The most severe of these issues are two OS command injection vulnerabilities, each with a high CVSS v4.0 score of 8.5.
Specifically, CVE-2026-30815 and CVE-2026-30818 impact the OpenVPN and dnsmasq modules, respectively. These arise from inadequate input validation during the processing of configuration files. Authenticated adversaries on the local network can exploit these flaws by uploading malicious configuration files, enabling unauthorized command execution.
Buffer Overflow and Data Exposure Risks
Another significant vulnerability, tracked as CVE-2026-30814 with a CVSS score of 7.3, involves a stack-based buffer overflow within the tmpServer module. By introducing a harmful configuration file, an attacker can cause a segmentation fault, crashing the service and allowing arbitrary code execution.
This level of exploitation permits attackers to destabilize the device, alter its functions, and secure a persistent presence on the network hardware. Additionally, two medium-severity vulnerabilities, CVE-2026-30816 and CVE-2026-30817, expose sensitive data by permitting arbitrary file reading in the OpenVPN and dnsmasq modules.
Mitigation and User Recommendations
These vulnerabilities, although they do not immediately grant control over the router, significantly risk exposing crucial administrative files, passwords, and network configurations, which attackers can utilize for further breaches. The affected device, the TP-Link Archer AX53 v1.0, is a widely used Wi-Fi 6 router globally, excluding the United States.
TP-Link has addressed these security issues in their latest firmware update. Users and network administrators are strongly advised to update their devices without delay to safeguard their networks from potential exploitation.
The affected firmware versions include all iterations before 1.7.1 Build 20260213. Users should download the updated firmware directly from TP-Link’s official support portal relevant to their region.
Leaving these routers unpatched presents a significant security risk, offering attackers a potential entry point into internal networks. Immediate updates are crucial to maintaining both home and enterprise network security. Stay informed on cybersecurity news by following us on Google News, LinkedIn, and X. For more information or to feature your stories, feel free to contact us.
