{"id":"CVE-2026-9032","state":"PUBLISHED","title":"Unauthenticated Onboarding Connect NULL Pointer Dereference Denial of Service Vulnerability in TP-Link Tapo C120 & C200","description":"Tapo C120 v1 and C200 v5\ncontain a NULL pointer dereference in the HTTPS onboarding connect request parser.  The interface is reachable without\nauthentication after initial setup and does not validate that a password field\nis present for certain authentication and encryption parameter combinations,\nallowing a malformed request from the same local network to crash the HTTPS service\n\n\n\n\n\n\n\n\n\n\n Successful exploitation may\ntemporarily make HTTPS management functions unavailable. Repeated malformed\nrequests may sustain the denial-of-service condition, and recovery may in some\ncases require a device reboot.","publishedAt":"2026-10-01T17:41:31.004Z","updatedAt":"2026-10-06T18:02:10.874Z","severity":{"score":7.1,"label":"High","version":"4.0","vector":"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","source":"TPLink"},"assigner":"TPLink","products":["TP-Link Systems Inc. Tapo C200 V5","TP-Link Systems Inc. Tapo C120 V1"],"affected":[{"vendor":"TP-Link Systems Inc.","product":"Tapo C200 V5","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"V5_1.4.6 Build 260709 Rel.27675n","versionType":"custom"}]},{"vendor":"TP-Link Systems Inc.","product":"Tapo C120 V1","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"V1_1.9.4 Build 260813 Rel.79754n","versionType":"custom"}]}],"references":["https://www.tp-link.com/us/support/download/tapo-c200/v5/#Firmware-Release-Notes","https://www.tp-link.com/en/support/download/tapo-c200/v5/#Firmware-Release-Notes","https://www.tp-link.com/us/support/download/tapo-c120/v1.26/#Firmware-Release-Notes","https://www.tp-link.com/en/support/download/tapo-c120/v1.26/#Firmware-Release-Notes","https://www.tp-link.com/us/support/faq/5321/"],"weaknesses":["CWE-476"],"ingestedAt":"2026-10-29T20:13:52.441Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/9xxx/CVE-2026-9032.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-9032","state":"PUBLISHED","datePublished":"2026-10-01T17:41:31.004Z","dateUpdated":"2026-10-06T18:02:10.874Z","assignerShortName":"TPLink","assignerOrgId":"f23511db-6c3e-4e32-a477-6aa17d310630","dateReserved":"2026-05-19T16:30:36.090Z"},"containers":{"cna":{"title":"Unauthenticated Onboarding Connect NULL Pointer Dereference Denial of Service Vulnerability in TP-Link Tapo C120 & C200","descriptions":[{"lang":"en","value":"Tapo C120 v1 and C200 v5\ncontain a NULL pointer dereference in the HTTPS onboarding connect request parser.  The interface is reachable without\nauthentication after initial setup and does not validate that a password field\nis present for certain authentication and encryption parameter combinations,\nallowing a malformed request from the same local network to crash the HTTPS service\n\n\n\n\n\n\n\n\n\n\n Successful exploitation may\ntemporarily make HTTPS management functions unavailable. Repeated malformed\nrequests may sustain the denial-of-service condition, and recovery may in some\ncases require a device reboot."}],"affected":[{"vendor":"TP-Link Systems Inc.","product":"Tapo C200 V5","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"V5_1.4.6 Build 260709 Rel.27675n","versionType":"custom"}]},{"vendor":"TP-Link Systems Inc.","product":"Tapo C120 V1","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"V1_1.9.4 Build 260813 Rel.79754n","versionType":"custom"}]}],"references":[{"url":"https://www.tp-link.com/us/support/download/tapo-c200/v5/#Firmware-Release-Notes","tags":["patch"]},{"url":"https://www.tp-link.com/en/support/download/tapo-c200/v5/#Firmware-Release-Notes","tags":["patch"]},{"url":"https://www.tp-link.com/us/support/download/tapo-c120/v1.26/#Firmware-Release-Notes","tags":["patch"]},{"url":"https://www.tp-link.com/en/support/download/tapo-c120/v1.26/#Firmware-Release-Notes","tags":["patch"]},{"url":"https://www.tp-link.com/us/support/faq/5321/","tags":["vendor-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"ADJACENT","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","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":7.1,"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-476","lang":"en","description":"CWE-476 NULL pointer dereference","type":"CWE"}]}],"providerMetadata":{"shortName":"TPLink","orgId":"f23511db-6c3e-4e32-a477-6aa17d310630","dateUpdated":"2026-10-01T17:41:31.004Z"},"impacts":[{"capecId":"CAPEC-100","descriptions":[{"lang":"en","value":"CAPEC-100 Overflow Buffers"}]}],"credits":[{"lang":"en","value":"Thai Do (Lio) and Khoi Tran (KayTii) from OPSWAT","type":"finder"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.5"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-06T18:01:56.089842Z","id":"CVE-2026-9032","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-06T18:02:10.874Z"}}]}}}