CVE-2026-105672 in Tapo C325WB
Summary
by MITRE • 10/09/2026
TP-Link Tapo C325WB V2 contains an unauthenticated authorization bypass vulnerability in the HTTPS JSON API dispatcher on TCP port 443. An attacker on the adjacent network can append an onboarding-scoped object to a JSON request to bypass session verification and invoke privileged actions without authentication.
Successful exploitation may allow an unauthenticated adjacent-network attacker to access live video and audio, modify device settings, and obtain sensitive device information or secrets.
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Analysis
by VulDB Data Team • 10/09/2026
The TP-Link Tapo C325WB V2 smart camera suffers from a critical unauthenticated authorization bypass vulnerability within its HTTPS JSON API dispatcher operating on TCP port 443. This flaw stems from an insufficient validation mechanism in the request processing logic, specifically regarding how session tokens and access scopes are verified before executing privileged commands. The architecture of the device's web interface relies on distinguishing between different operational contexts, such as initial setup or onboarding versus standard user operation. However, the dispatcher fails to strictly enforce scope boundaries when parsing JSON payloads sent by clients connected to the same local network segment. This architectural oversight allows an attacker to manipulate request parameters in a way that tricks the server into treating unauthenticated requests as if they were part of a valid administrative session.
The technical mechanism of this exploitation involves appending specific onboarding-scoped objects or identifiers to standard JSON API requests. By injecting these elements, the attacker effectively bypasses the session verification process entirely. The device's backend logic incorrectly associates these manipulated payloads with privileged execution contexts that normally require authentication. This misalignment between request scope and access control checks means that any command intended for an authenticated administrator can be executed by a remote actor without providing valid credentials. The vulnerability is particularly severe because it does not require prior login or token acquisition, making the attack surface wide open to anyone within network proximity who can reach port 443.
The operational impact of this vulnerability is extensive and compromises the core security promises of the IoT device. An unauthenticated attacker on an adjacent network can gain full control over the camera's functionality. This includes the ability to access live video and audio streams, which poses a severe privacy risk for users in residential or office environments. Furthermore, the attacker can modify critical device settings, such as changing Wi-Fi credentials, altering recording schedules, or disabling security features like motion detection alerts. Beyond immediate surveillance risks, the attacker may extract sensitive device information and secrets stored on the firmware, potentially exposing network topology details or cryptographic keys that could facilitate further lateral movement within a home or corporate LAN.
This vulnerability aligns with CWE-287 Improper Authentication and CWE-862 Missing Authorization, as the system fails to verify user identity before granting access to protected resources. In terms of offensive security frameworks, this exploitation technique maps directly to MITRE ATT&CK T1078 Valid Accounts or more accurately in this context, unauthorized access patterns similar to T1548 Abuse Elevation Control Mechanism if privilege escalation is involved, though primarily it represents a direct bypass of authentication controls. The ability to manipulate API parameters without session validation also reflects weaknesses often seen in CWE-923 Improper Restriction of Excessive Authentication Attempts or flawed input handling that leads to logic errors.
Mitigation strategies must prioritize immediate network segmentation and firmware updates if available from the vendor. Users should isolate IoT devices on a separate VLAN with strict firewall rules that restrict inbound traffic to port 443 only from trusted management stations, rather than allowing open access across the entire local area network. Since this is an unauthenticated remote code execution vector via API manipulation, relying solely on perimeter defenses may be insufficient if internal threats exist; therefore, monitoring for anomalous JSON payloads targeting the camera's API endpoints can provide early detection indicators. Until a patched firmware version is released and installed by end-users, restricting physical access to the device and disabling unnecessary network services are essential defensive measures to reduce the attack surface.