CVE-2026-105673 in Tapo C325WB
Summary
by MITRE • 10/09/2026
An unauthenticated denial-of-service vulnerability exists in Tapo C325WB v2 in the RTSP streaming service on TCP port 554 when the Camera Account feature is enabled. A crafted pair of RTSP-over-HTTP tunneling requests can cause memory corruption and crash the streaming daemon.
Successful exploitation may allow an unauthenticated adjacent-network attacker to disrupt live video and related streaming functions until the affected service recovers or restarts.
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Analysis
by VulDB Data Team • 10/09/2026
The Tapo C325WB v2 network camera contains a critical security flaw within its Real Time Streaming Protocol (RTSP) implementation, specifically affecting the TCP port 554 interface when the Camera Account feature is active. This vulnerability represents an unauthenticated denial-of-service condition that stems from improper memory management during the processing of RTSP-over-HTTP tunneling requests. The core technical issue involves a lack of sufficient validation and bounds checking on input data received through these tunneled connections, which leads to heap or stack corruption when specific crafted payloads are processed by the streaming daemon. This type of flaw is characteristic of CWE-120 Buffer Overflow vulnerabilities where the application fails to ensure that user-supplied data fits within the allocated memory boundaries, resulting in overwriting adjacent memory structures and corrupting critical control flow information or state variables within the service process.
The operational impact of this vulnerability is significant for users relying on continuous video surveillance. Because the flaw allows an unauthenticated attacker operating from an adjacent network segment to trigger a crash simply by sending malformed requests, it effectively neutralizes the camera's primary function without requiring any credentials. Successful exploitation results in the immediate termination or severe instability of the streaming daemon, causing live video feeds and related recording functions to become unavailable. The disruption persists until the service is manually restarted or the device undergoes an automatic recovery process if such a mechanism is implemented by the firmware vendor. This creates a persistent availability risk that can be exploited repeatedly with minimal effort from the attacker side.
From a threat modeling perspective, this vulnerability aligns closely with MITRE ATT&CK technique T1499 Endpoint Denial of Service, where an adversary aims to disrupt or deny service to specific components rather than compromising confidentiality or integrity. The attack vector is classified as Network Adjacent because it requires the attacker to be on the same local network segment but does not require prior authentication, placing it under CWE-287 Improper Authentication in terms of access control failures that facilitate the exploit. The use of RTSP-over-HTTP tunneling adds a layer of complexity, as these requests may traverse firewalls or proxies that allow HTTP traffic, potentially bypassing basic network security controls designed to block raw RTSP streams on port 554.
Mitigation strategies for this vulnerability primarily involve applying vendor-provided firmware updates that patch the memory handling logic within the streaming service. Until such patches are available, administrators should consider isolating camera devices from untrusted adjacent networks using VLAN segmentation or strict firewall rules that restrict access to TCP port 554 and HTTP tunneling endpoints only to authorized management stations. Additionally, disabling the Camera Account feature if not strictly necessary may reduce the attack surface by removing the specific code path vulnerable to this memory corruption issue. Continuous monitoring of network traffic for anomalous RTSP request patterns can also aid in detecting attempted exploitation activities before they result in service disruption.