CVE-2026-15314 in P110
Summary
by MITRE • 08/04/2026
Tapo P110 v1 smart Wi-Fi Plug contains an improper boundary validation vulnerability in the handling of authenticated HTTP request bodies due to insufficient input validation before memory copy operations. This may lead to buffer overflow condition, causing the web service process to crash.
Successful exploitation may cause the web service process to stop responding or restart, resulting in a denial-of-service condition.
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Analysis
by VulDB Data Team • 08/04/2026
The Tapo P110 v1 smart Wi-Fi plug presents a critical security vulnerability classified as improper boundary validation within its HTTP request processing mechanism. This flaw resides in the device's web service implementation where authenticated HTTP request bodies are handled without adequate input validation prior to memory copy operations. The vulnerability stems from insufficient bounds checking on user-supplied data before it is copied into fixed-size memory buffers, creating an exploitable condition that can be leveraged by authenticated attackers to manipulate the device's operational state.
This improper boundary validation represents a direct violation of fundamental security principles and aligns with CWE-121, which addresses stack-based buffer overflow conditions. The vulnerability specifically manifests when the device processes HTTP request bodies containing maliciously crafted input that exceeds the allocated buffer size. The absence of proper input sanitization before memory operations creates a pathway for attackers to overwrite adjacent memory locations, potentially leading to arbitrary code execution or process termination. The weakness exists in the device's web server component that handles authenticated requests from connected clients, making it accessible to users who have established valid credentials with the device.
The operational impact of this vulnerability extends beyond simple service disruption to encompass potential system instability and complete device unavailability. When exploited successfully, the buffer overflow condition causes the web service process to crash and subsequently restarts, creating a denial-of-service scenario that renders the smart plug inaccessible to legitimate users. This disruption affects not only the device's core functionality but also its integration within larger home automation ecosystems where reliable connectivity is essential for proper operation of interconnected smart devices. The repeated crashes can lead to persistent unavailability of the device, forcing users to manually restart or reset the hardware component.
Mitigation strategies should focus on implementing robust input validation mechanisms that enforce strict boundary checking before any memory copy operations occur. Device manufacturers must ensure that all user-supplied data undergoes comprehensive sanitization and size verification before being processed by memory management functions. Network segmentation and access controls can provide additional layers of protection by limiting the attack surface and restricting unauthorized access to device management interfaces. Regular firmware updates should be deployed to address such vulnerabilities promptly, while implementing intrusion detection systems can help identify suspicious traffic patterns that may indicate exploitation attempts. Security professionals should also consider applying network-based protections such as firewalls that monitor and filter HTTP request sizes to prevent malicious payloads from reaching vulnerable components. The vulnerability highlights the importance of adhering to secure coding practices and following established security frameworks that emphasize proper input validation as a fundamental defense mechanism against buffer overflow exploits.