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An Improper Certificate Validation vulnerability in TP-Link Tapo H100 v1 and Tapo P100 v1 allows an on-path attacker on the same network segment to intercept and modify encrypted device-cloud communications.  This may compromise the confidentiality and integrity of device-to-cloud communication, enabling manipulation of device data or operations.

CVE-2025-15557 is an improper certificate validation vulnerability (CWE-295) identified in TP-Link Systems Inc.'s Tapo H100 v1 and P100 v1 smart devices. The flaw arises because the devices fail to properly validate TLS certificates during device-to-cloud communications, allowing an attacker positioned on the same local network segment (on-path attacker) to intercept and manipulate encrypted traffic. This vulnerability undermines the confidentiality and integrity of communications, potentially enabling attackers to alter device commands or data sent to or from the cloud. The CVSS 4.0 score of 7.5 reflects a high severity, with attack vector being adjacent network, low attack complexity, no privileges required, but requiring user interaction. The vulnerability does not affect system confidentiality, integrity, or availability beyond the device-cloud communication channel, and no supply chain or systemic compromise is indicated. No patches or known exploits have been published yet, but the risk remains significant given the widespread use of these devices in consumer and enterprise IoT environments. The vulnerability could be exploited to disrupt device functionality or manipulate device states remotely, impacting automation, monitoring, or security functions dependent on these devices.

Detailed information about CVE-2025-15557: CWE-295 Improper Certificate Validation in TP-Link Systems Inc. Tapo H100 v1 affecting TP-Link Systems Inc. Tapo H100

CVE-2025-15557: CWE-295 Improper Certificate Validation in TP-Link Systems Inc. Tapo H100 v1 - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2025-15557: CWE-295 Improper Certificate Validation in TP-Link Systems Inc. Tapo H100 v1

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