CVE-2026-34124

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The implementation enforces length restrictions on the raw request path but does not account for path expansion performed during normalization. An attacker on the adjacent network may send a crafted HTTP request to cause buffer overflow and memory corruption, leading to system interruption or device reboot."}, {"lang": "es", "value": "Una vulnerabilidad de denegaci\u00f3n de servicio fue identificada en TP-Link Tapo C520WS v2.6 dentro de la l\u00f3gica de an\u00e1lisis de la ruta de solicitud HTTP. La implementaci\u00f3n impone restricciones de longitud en la ruta de solicitud sin procesar, pero no tiene en cuenta la expansi\u00f3n de la ruta realizada durante la normalizaci\u00f3n. Un atacante en la red adyacente puede enviar una solicitud HTTP manipulada para causar desbordamiento de b\u00fafer y corrupci\u00f3n de memoria, lo que lleva a la interrupci\u00f3n del sistema o al reinicio del dispositivo."}], "id": "CVE-2026-34124", "lastModified": "2026-07-24T21:10:00.143", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "ADJACENT", "availabilityRequirement": "NOT_DEFINED", "baseScore": 7.1, "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": "NONE", "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:N/UI:N/VC:N/VI:N/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": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "f23511db-6c3e-4e32-a477-6aa17d310630", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-34124", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-04-03T13:05:41.888474Z", "version": "2.0.3"}}]}, "published": "2026-04-02T18:16:29.310", "references": [{"source": "f23511db-6c3e-4e32-a477-6aa17d310630", "tags": ["Release Notes"], "url": "https://www.tp-link.com/en/support/download/tapo-c520ws/#Firmware-Release-Notes"}, {"source": "f23511db-6c3e-4e32-a477-6aa17d310630", "tags": ["Release Notes"], "url": "https://www.tp-link.com/us/support/download/tapo-c520ws/#Firmware-Release-Notes"}, {"source": "f23511db-6c3e-4e32-a477-6aa17d310630", "tags": ["Vendor Advisory"], "url": "https://www.tp-link.com/us/support/faq/5047/"}], "sourceIdentifier": "f23511db-6c3e-4e32-a477-6aa17d310630", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-120"}], "source": "f23511db-6c3e-4e32-a477-6aa17d310630", "type": "Secondary"}]}

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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": "2026-04-07T01:49:01.197391+00:00", "value": {"mitigation_remediation": ["Update the Tapo C520WS firmware to the latest version, as documented in TP\u2011Link\u2019s release notes, to eliminate the path\u2011expansion overflow. ", "Enforce network segmentation so that the camera\u2019s HTTP interface is only reachable from trusted segments or the local home network. ", "If updating is not immediately possible, disable or block external HTTP access to the device through firewall rules or by disabling the HTTP service in the camera\u2019s settings."], "summary": {"action": "Immediate Patch", "impact": "Denial of Service"}, "threat_synthesis": {"affected_systems": "Only the TP\u2011Link Tapo C520WS camera running firmware v2.6 is affected. The vulnerability is tied to the device\u2019s HTTP service and would be exploitable by an adversary who can communicate with the camera over the local network.", "description_and_impact": "The flaw lies in TP\u2011Link Tapo C520WS v2.6\u2019s HTTP request path\u2011parsing module. The implementation enforces a maximum length on the raw request path but fails to account for the expansion that occurs during URI normalization. This oversight allows an attacker to send a specially crafted HTTP request that overflows a buffer, corrupts memory, and ultimately interrupts the device\u2019s operation or forces a reboot.", "risk_and_exploitability": "The CVSS score of 7.1 indicates substantial impact, yet the EPSS score is below 1\u202f% and the weakness is not listed in the CISA KEV catalog. The likely attack vector is local network access; an attacker must be able to transmit HTTP traffic to the device, making it most relevant for unmanaged or poorly segmented networks."}}}}, "created": "2026-04-03T08:58:07.286972+00:00", "updated": "2026-04-07T07:55:46.095375+00:00", "vendors": ["tp-link", "tp-link$PRODUCT$tapo_c520ws_v2"]}