CVE-2026-78845 in Smart Plug
Summary
by MITRE • 10/27/2026
Aidot products Linkind Matter Smart Plug 1.01.32, OREiN Matter Smart Light Bulb 3.15.21, and Linkind Wi-Fi Smart Light Bulb 3.30.17 are vulnerable to Remote Code Execution (RCE) via UPnP root description parsing.
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Analysis
by VulDB Data Team • 10/27/2026
The identified vulnerabilities in Aidot products, specifically the Linkind Matter Smart Plug version 1.01.32, OREiN Matter Smart Light Bulb version 3.15.21, and Linkind Wi-Fi Smart Light Bulb version 3.30.17, represent a critical class of security flaws rooted in improper input validation within the Universal Plug and Play (UPnP) implementation. These Internet of Things devices rely heavily on UPnP for device discovery and control over local networks, utilizing XML-based root description documents to advertise their capabilities and service endpoints. The core technical flaw lies in the parsing logic used by these devices when processing incoming UPnP requests or descriptions. Specifically, the parsers fail to adequately sanitize or validate input data before processing it, creating a pathway for Remote Code Execution attacks. This deficiency allows an attacker who can reach the device on the network to inject malicious payloads into the XML structures that are subsequently executed with elevated privileges inherent to the embedded operating system running on these IoT endpoints.
This vulnerability aligns closely with Common Weakness Enumeration (CWE) identifiers such as CWE-20, which denotes Improper Input Validation, and more specifically CWE-74, which describes Insecure Deserialization of Data in an Untrusted Environment. When a UPnP root description is parsed, the device often interprets various tags and attributes to configure internal states or invoke methods on embedded services. If the parser does not strictly enforce expected data types or bounds, it becomes susceptible to buffer overflows or command injection vectors depending on how the underlying C or C++ code handles string manipulation. In many IoT implementations, UPnP stacks are built using legacy libraries that may lack modern security hardening features like stack canaries or address space layout randomization, making successful exploitation significantly more likely and impactful. The attack vector typically involves sending a specially crafted HTTP POST request to the device's control point URL, containing XML data with embedded malicious commands or shellcode within specific fields intended for configuration parameters.
The operational impact of this Remote Code Execution vulnerability is severe, as it effectively grants an attacker full administrative control over the compromised smart plug or light bulb from the perspective of the device firmware. Although these devices are often perceived as low-value targets due to their limited computational resources and non-critical functions compared to servers or workstations, they serve as potent entry points for lateral movement within a home or enterprise network. An attacker can use the compromised IoT device as a pivot point to scan internal networks, attack other connected systems such as computers, smartphones, or critical infrastructure controllers, and exfiltrate sensitive data from devices on the same subnet. Furthermore, because these are Matter-enabled products, they may also be integrated into broader smart home ecosystems where trust boundaries between different applications and services might be loosely defined, potentially allowing the attacker to propagate malicious commands through legitimate API calls managed by the central hub or controller application.
From a threat intelligence perspective, this vulnerability maps directly to MITRE ATT&CK techniques related to Initial Access via Valid Accounts if credentials are required for initial reachability, but more accurately to T1203 Exploitation for Client Execution and potentially T1564 Hidden Files and Directories if the attacker attempts to maintain persistence. The ability to execute arbitrary code remotely without authentication or with minimal privileges highlights a fundamental design flaw in how these manufacturers handle network-facing services. It underscores the risk of deploying consumer-grade IoT devices on segmented networks that are not strictly isolated from critical IT assets, as the assumption of low risk is often invalidated by high-severity vulnerabilities like RCE.
Mitigation strategies must address both immediate remediation and long-term architectural improvements. The primary defense is to apply vendor-provided firmware updates immediately if available, as manufacturers typically release patches that sanitize input data or disable vulnerable UPnP endpoints entirely. In the absence of an update, network segmentation should be enforced using firewalls or VLANs to restrict traffic from IoT devices to only necessary ports and protocols, effectively blocking external access to the UPnP control points. Additionally, disabling Universal Plug and Play functionality through device configuration settings is a highly effective mitigation since many modern smart home ecosystems can operate without it by relying on direct API calls over HTTPS rather than local discovery mechanisms. Security teams should also monitor network traffic for anomalous HTTP POST requests containing large or malformed XML payloads directed at IoT IP addresses, which may indicate active exploitation attempts. Regular vulnerability scanning of the OT and IoT segments is essential to identify unpatched devices before they can be leveraged in broader attack campaigns.