CVE-2025-15608 is a stack-based buffer overflow vulnerability identified in the TP-Link AX53 v1 router. The root cause lies in insufficient input validation within the device’s probe handling logic, where unvalidated parameters can overflow the stack buffer. This overflow can cause the affected service to crash, resulting in denial of service. More critically, under specific and complex conditions involving heap-spray techniques, an attacker may achieve remote code execution (RCE) on the device. The vulnerability does not require authentication or user interaction, increasing its risk profile. The CVSS 4.0 score is 7.7 (high), reflecting the vulnerability’s potential to impact confidentiality, integrity, and availability with a low attack complexity but requiring network access. The affected product version is AX53 v1, with no patches currently available and no known exploits in the wild. The vulnerability is categorized under CWE-121 (stack-based buffer overflow), indicating a classic memory corruption flaw that can be leveraged for arbitrary code execution if exploited successfully.

The primary impact of CVE-2025-15608 is on the availability and security of TP-Link AX53 v1 routers. Successful exploitation can cause repeated service crashes, leading to denial of service and network disruption for users relying on these devices. More severe consequences include remote code execution, which could allow attackers to take full control of the router, manipulate network traffic, intercept sensitive data, or use the device as a foothold for further attacks within the network. This poses a significant risk to both home users and organizations that deploy these routers, potentially compromising network integrity and confidentiality. Given the device’s role as a network gateway, exploitation could have cascading effects on connected systems and data privacy.

1. Immediate mitigation should include isolating affected AX53 v1 devices from critical networks until a patch is available. 2. Monitor network traffic for unusual probe requests or signs of exploitation attempts targeting the probe handling logic. 3. Employ network-level intrusion detection/prevention systems (IDS/IPS) with signatures or heuristics to detect buffer overflow attempts or heap-spray patterns. 4. Restrict remote network access to the router’s management interfaces and disable unnecessary services to reduce the attack surface. 5. Regularly check TP-Link’s official channels for firmware updates or security advisories addressing this vulnerability and apply patches promptly once released. 6. Consider replacing AX53 v1 devices with newer models if patching is delayed or unavailable, especially in high-security environments. 7. Conduct internal network segmentation to limit the impact of a compromised router on critical assets.