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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,1.2.4 Build 260326 Rel.24666n)"}}], "enrichment": {"confidence": 81.0, "confidence_source": "matching", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 81.0, "source": "matching"}]}, "original": {"product": "Tapo C520WS v2.6", "source": "cna", "vendor": "TP-Link Systems Inc."}, "product": "tapo_c520ws_v2", "vendor": "tp-link"}], "analysis": {"en": {"generated_at": "2026-04-02T22:31:57.394287+00:00", "value": {"mitigation_remediation": ["Apply the latest firmware update from TP\u2011Link that includes a fix for the authentication bypass defect", "Restrict network access to the device to trusted devices only, for example by configuring firewall rules or router ACLs", "If the device is exposed to the internet, disable remote management or block external access to the relevant ports", "Regularly monitor device logs for anomalous configuration changes and investigate any unauthorized activity"], "summary": {"action": "Update Firmware", "impact": "Unauthorized configuration modification"}, "threat_synthesis": {"affected_systems": "The affected system is the TP\u2011Link Tapo C520WS model v2.6, released by TP\u2011Link Systems Inc. No other vendors or product variants are listed as impacted in the available data.", "description_and_impact": "An authentication bypass flaw in the DS configuration service of TP\u2011Link Tapo C520WS v2.6 allows an unauthenticated attacker to inject privileged actions into a JSON request, causing the device to perform restricted configuration changes without proper authorization. This vulnerability is a fault in request parsing and authorization logic, classified as CWE-287. The consequence is that an attacker can alter device settings or operate the device in unauthorized modes, potentially disrupting network services or compromising sensitive data stored on the device.", "risk_and_exploitability": "The flaw carries a high CVSS score of 8.7, indicating significant impact if exploited. EPSS data is unavailable, but the weakness is not listed in the CISA Known Exploited Vulnerabilities catalog, suggesting that publicly known exploits may not yet exist. The attack vector is inferred to be through the device\u2019s local network interface, as the vulnerability requires sending a specially crafted HTTP request to the DS configuration service. Successful exploitation would not require prior authentication and would enable an attacker to modify device configuration settings."}}}}, "created": "2026-04-03T08:58:09.328583+00:00", "updated": "2026-04-03T09:18:02.099715+00:00", "vendors": ["tp-link", "tp-link$PRODUCT$tapo_c520ws_v2"]}