{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-3561", "assignerOrgId": "99f1926a-a320-47d8-bbb5-42feb611262e", "state": "PUBLISHED", "assignerShortName": "zdi", "dateReserved": "2026-03-04T19:42:53.419Z", "datePublished": "2026-03-13T20:37:05.625Z", "dateUpdated": "2026-03-16T20:21:04.470Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "99f1926a-a320-47d8-bbb5-42feb611262e", "shortName": "zdi", "dateUpdated": "2026-03-13T20:37:05.625Z"}, "title": "Philips Hue Bridge hk_hap characteristics Heap-based Buffer Overflow Remote Code Execution Vulnerability", "descriptions": [{"lang": "en", "value": "Philips Hue Bridge hk_hap characteristics Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Philips Hue Bridge. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed.\n\nThe specific flaw exists within the handling of PUT requests to the characteristics endpoint. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the device. Was ZDI-CAN-28479."}], "affected": [{"vendor": "Philips", "product": "Hue Bridge", "versions": [{"version": "1.73.1973146020", "status": "affected"}], "defaultStatus": "unknown"}], "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-122", "description": "CWE-122: Heap-based Buffer Overflow", "type": "CWE"}]}], "references": [{"url": "https://www.zerodayinitiative.com/advisories/ZDI-26-159/", "name": "ZDI-26-159", "tags": ["x_research-advisory"]}], "dateAssigned": "2026-03-04T19:42:53.455Z", "datePublic": "2026-03-06T21:19:38.258Z", "source": {"lang": "en", "value": "Thalium team from Thales Group (@thalium_team)"}, "metrics": [{"format": "CVSS", "cvssV3_0": {"version": "3.0", "vectorString": "CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8, "baseSeverity": "HIGH"}}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-03-16T20:20:49.680668Z", "id": "CVE-2026-3561", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-16T20:21:04.470Z"}}]}}

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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:philips:hue_bridge_v2_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "C4C925A5-D9FB-482D-A98D-F879B1BD21EC", "versionEndExcluding": "1975170000", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:philips:hue_bridge_v2:-:*:*:*:*:*:*:*", "matchCriteriaId": "55B37D18-3A59-423E-9D73-F80DFDB14C4D", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Philips Hue Bridge hk_hap characteristics Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Philips Hue Bridge. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed.\n\nThe specific flaw exists within the handling of PUT requests to the characteristics endpoint. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the device. Was ZDI-CAN-28479."}, {"lang": "es", "value": "Vulnerabilidad de ejecuci\u00f3n remota de c\u00f3digo por desbordamiento de b\u00fafer basado en mont\u00edculo en las caracter\u00edsticas hk_hap de Philips Hue Bridge. Esta vulnerabilidad permite a atacantes adyacentes a la red ejecutar c\u00f3digo arbitrario en instalaciones afectadas de Philips Hue Bridge. Aunque se requiere autenticaci\u00f3n para explotar esta vulnerabilidad, el mecanismo de autenticaci\u00f3n existente puede ser eludido.\n\nLa falla espec\u00edfica reside en el manejo de solicitudes PUT al endpoint de caracter\u00edsticas. El problema resulta de la falta de validaci\u00f3n adecuada de la longitud de los datos proporcionados por el usuario antes de copiarlos a un b\u00fafer basado en mont\u00edculo. Un atacante puede aprovechar esta vulnerabilidad para ejecutar c\u00f3digo en el contexto del dispositivo. Fue ZDI-CAN-28479."}], "id": "CVE-2026-3561", "lastModified": "2026-04-27T14:30:01.860", "metrics": {"cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.0"}, "exploitabilityScore": 2.1, "impactScore": 5.9, "source": "zdi-disclosures@trendmicro.com", "type": "Secondary"}]}, "published": "2026-03-16T14:19:52.197", "references": [{"source": "zdi-disclosures@trendmicro.com", "tags": ["Third Party Advisory"], "url": "https://www.zerodayinitiative.com/advisories/ZDI-26-159/"}], "sourceIdentifier": "zdi-disclosures@trendmicro.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-122"}], "source": "zdi-disclosures@trendmicro.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "1.73.1973146020"}}], "enrichment": {"confidence": 97.0, "confidence_source": "matching", "scores": [{"score": 97.0, "source": "matching"}]}, "original": {"product": "Hue Bridge", "source": "cna", "vendor": "Philips"}, "product": "hue_bridge", "vendor": "phillips"}], "analysis": {"en": {"generated_at": "2026-03-16T23:44:09.428233+00:00", "value": {"mitigation_remediation": ["Apply the latest official firmware update for Philips Hue Bridge as soon as it becomes available.", "Restrict network access to the Hue Bridge by placing it on a separate VLAN or using firewall rules to allow only trusted devices to communicate with it.", "Monitor Hue Bridge logs and network traffic for unusual PUT requests to the characteristics endpoint, and investigate any suspicious activity promptly."], "summary": {"action": "Immediate Patch", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "The affected product is Philips Hue Bridge. No specific firmware or model versions are listed in the provided data, so all current installations may be vulnerable until an official patch is released.", "description_and_impact": "The vulnerability is a heap\u2011based buffer overflow in the hk_hap characteristics endpoint of Philips Hue Bridge. An attacker can send oversized data in a PUT request to the characteristics endpoint, bypassing the existing authentication mechanism due to improper validation of the length of user\u2011supplied data. This flaw (CWE\u2011122) allows the attacker to execute arbitrary code in the device\u2019s context, resulting in a full compromise of confidentiality, integrity, and availability.", "risk_and_exploitability": "The CVSS score of 8.0 indicates high severity. The EPSS score of less than 1% suggests a relatively low probability of exploitation at the moment, and the vulnerability is not listed in CISA\u2019s KEV catalog. Exploitation requires an adversary to be network\u2011adjacent to the Hue Bridge and to send a crafted PUT request to the characteristics endpoint. Authentication can be bypassed, so the attack vector is local network, pre\u2011authenticated, and relatively straightforward for a nearby attacker."}}}}, "created": "2026-03-16T09:23:43.048728+00:00", "updated": "2026-03-23T13:39:49.140031+00:00", "vendors": ["phillips", "phillips$PRODUCT$hue_bridge"]}