{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-34123", "assignerOrgId": "f23511db-6c3e-4e32-a477-6aa17d310630", "state": "PUBLISHED", "assignerShortName": "TPLink", "dateReserved": "2026-03-25T18:54:03.343Z", "datePublished": "2026-06-05T23:50:40.407Z", "dateUpdated": "2026-06-05T23:50:40.407Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f23511db-6c3e-4e32-a477-6aa17d310630", "shortName": "TPLink", "dateUpdated": "2026-06-05T23:50:40.407Z"}, "title": "Whitelist Validation Bypass in TP-Link Tapo C520WS", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-287", "description": "CWE-287 Improper Authentication", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-1", "descriptions": [{"lang": "en", "value": "CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs"}]}], "affected": [{"vendor": "TP-Link Systems Inc.", "product": "Tapo C520WS v2", "versions": [{"status": "affected", "version": "0", "lessThan": "1.2.6 Build 260528", "versionType": "custom"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "On Tapo\nC520WS v2, restricted accounts (for example, hub users) are intended to execute\nonly a limited set of low\u2011sensitivity operations. Due to a logic flaw in the\ndevice\u2019s API authorization mechanism, an attacker can craft requests that\nleverage legitimate \u201cmethod mapping\u201d behavior to bypass whitelist restrictions,\nallowing restricted operations to be masked as permitted requests and executed.\n\n\n\n\n\nSuccessful\nexploitation may allow an attacker (with access to a restricted account) to\nexecute unauthorized sensitive operations.\u00a0\nDepending on the operation invoked, impact could include device\nresets, unintended configuration changes, or disruption of normal operation,\nleading to loss of availability and integrity of the device.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>On Tapo\nC520WS v2, restricted accounts (for example, hub users) are intended to execute\nonly a limited set of low\u2011sensitivity operations. Due to a logic flaw in the\ndevice\u2019s API authorization mechanism, an attacker can craft requests that\nleverage legitimate \u201cmethod mapping\u201d behavior to bypass whitelist restrictions,\nallowing restricted operations to be masked as permitted requests and executed.</p>\n\n<p>Successful\nexploitation may allow an attacker (with access to a restricted account) to\nexecute <b>unauthorized sensitive operations.&nbsp;\n</b>Depending on the operation invoked, impact could include device\nresets, unintended configuration changes, or disruption of normal operation,\nleading to loss of availability and integrity of the device.</p>"}]}], "references": [{"url": "https://www.tp-link.com/us/support/download/tapo-c520ws/#Firmware-Release-Notes", "tags": ["patch"]}, {"url": "https://www.tp-link.com/en/support/download/tapo-c520ws/#Firmware-Release-Notes", "tags": ["patch"]}, {"url": "https://www.tp-link.com/us/support/faq/5120/", "tags": ["vendor-advisory"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "ADJACENT", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "HIGH", "baseScore": 7, "vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N"}}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.1"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "On Tapo\nC520WS v2, restricted accounts (for example, hub users) are intended to execute\nonly a limited set of low\u2011sensitivity operations. Due to a logic flaw in the\ndevice\u2019s API authorization mechanism, an attacker can craft requests that\nleverage legitimate \u201cmethod mapping\u201d behavior to bypass whitelist restrictions,\nallowing restricted operations to be masked as permitted requests and executed.\n\n\n\n\n\nSuccessful\nexploitation may allow an attacker (with access to a restricted account) to\nexecute unauthorized sensitive operations.\u00a0\nDepending on the operation invoked, impact could include device\nresets, unintended configuration changes, or disruption of normal operation,\nleading to loss of availability and integrity of the device."}], "id": "CVE-2026-34123", "lastModified": "2026-06-06T00:16:40.833", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "ADJACENT", "availabilityRequirement": "NOT_DEFINED", "baseScore": 7.0, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "f23511db-6c3e-4e32-a477-6aa17d310630", "type": "Secondary"}]}, "published": "2026-06-06T00:16:40.833", "references": [{"source": "f23511db-6c3e-4e32-a477-6aa17d310630", "url": "https://www.tp-link.com/en/support/download/tapo-c520ws/#Firmware-Release-Notes"}, {"source": "f23511db-6c3e-4e32-a477-6aa17d310630", "url": "https://www.tp-link.com/us/support/download/tapo-c520ws/#Firmware-Release-Notes"}, {"source": "f23511db-6c3e-4e32-a477-6aa17d310630", "url": "https://www.tp-link.com/us/support/faq/5120/"}], "sourceIdentifier": "f23511db-6c3e-4e32-a477-6aa17d310630", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-287"}], "source": "f23511db-6c3e-4e32-a477-6aa17d310630", "type": "Secondary"}]}

{}

{"created": "2026-06-06T01:30:06.066860+00:00", "updated": "2026-06-06T01:30:06.066877+00:00", "vendors": []}