{"slug":"tplink-tapo-c420-v1-us","display_name":"Tapo C420","model_name":"Tapo C420","hardware_revision":"v1","region_code":"US","category":"ip_camera","vendor":{"slug":"tplink","name":"TP-Link"},"verdict":{"status":"quiet","label":"Gone quiet","confidence":"medium","reason":"230 days since the last release against a median gap of 44 (5.2x)","algorithm_version":"lifecycle-1","computed_at":"2026-09-30T01:14:43.521649+00:00","thresholds":{"quiet_days":730,"active_max_days":365,"active_multiple":1.5,"slowing_multiple":3.0,"max_gap_dispersion":1.0,"high_confidence_releases":5,"min_releases_for_cadence":3,"never_updated_min_age_days":365}},"measurements":{"release_count":14,"first_release_date":"2023-01-03","last_release_date":"2026-02-12","days_since_last_release":230,"median_gap_days":44.0,"cadence_multiple":5.227,"observed_support":{"days":1136,"is_floor":true,"measured_from":"first_release"},"promise":{"end_date":"2027-07-11","is_estimated":false,"is_floor":false,"honoured":false,"basis":"vendor_stated"},"cve_patch_latency_days":{"median":null,"measurable":false}},"releases":[{"version":"Tapo C420(US)_V1_1.4.2 Build 20251226","channel":"stable","claimed_release_date":"2026-02-12","claimed_date_precision":"day","is_vendor_dated":true,"first_observed_at":"2026-08-01T18:37:57.630436+00:00","observation_kind":"live_crawl","withdrawn_at":null,"changelog":"Modifications and Bug Fixes: 1. Fixed the issue where Device Settings pages in the Tapo app would be blank in some cases. 2. Enhanced device security. 3. Improved device performance.","disclosure_score":0.45,"mentions_security":true,"cve_ids":[],"download_url":null,"evidence":{"id":204134,"source_url":"https://www.tp-link.com/us/support/download/tapo-c420/v1/","fetched_at":"2026-09-29T03:21:09.502676+00:00","observed_at":"2026-09-29T03:21:09.502676+00:00","http_status":200,"content_sha256":"8bdecba26ff0bac4a81ae0d846d72a7a8876897f411c500d91f11a255518c906","html":"//firmwarewatch.cc/evidence/204134","raw":"//firmwarewatch.cc/evidence/204134/raw"}},{"version":"Tapo C420(US)_V1_1.4.1 Build 20250912","channel":"stable","claimed_release_date":"2025-11-17","claimed_date_precision":"day","is_vendor_dated":true,"first_observed_at":"2026-08-01T18:37:57.630436+00:00","observation_kind":"live_crawl","withdrawn_at":null,"changelog":"Modifications and Bug Fixes: 1. Enhanced device security and stability. 2. Improved live feed performance.","disclosure_score":0.28,"mentions_security":true,"cve_ids":[],"download_url":null,"evidence":{"id":204134,"source_url":"https://www.tp-link.com/us/support/download/tapo-c420/v1/","fetched_at":"2026-09-29T03:21:09.502676+00:00","observed_at":"2026-09-29T03:21:09.502676+00:00","http_status":200,"content_sha256":"8bdecba26ff0bac4a81ae0d846d72a7a8876897f411c500d91f11a255518c906","html":"//firmwarewatch.cc/evidence/204134","raw":"//firmwarewatch.cc/evidence/204134/raw"}},{"version":"Tapo C420(US)_V1_1.3.1 Build 20241218","channel":"stable","claimed_release_date":"2025-01-14","claimed_date_precision":"day","is_vendor_dated":true,"first_observed_at":"2026-08-01T18:37:57.630436+00:00","observation_kind":"live_crawl","withdrawn_at":null,"changelog":"Modifications and Bug Fixes: Added support for Migrate Connected Devices feature.","disclosure_score":0.31,"mentions_security":false,"cve_ids":[],"download_url":null,"evidence":{"id":204247,"source_url":"https://www.tp-link.com/us/support/download/tapo-c420s1/v1/","fetched_at":"2026-09-29T03:24:18.738571+00:00","observed_at":"2026-09-29T03:24:18.738571+00:00","http_status":200,"content_sha256":"bbbdd3361d49eb0938f4d38880969e679a39a79a21791e7458a12ca13a94aeca","html":"//firmwarewatch.cc/evidence/204247","raw":"//firmwarewatch.cc/evidence/204247/raw"}},{"version":"Tapo C420(US)_V1_1.2.17 Build 20240305","channel":"stable","claimed_release_date":"2024-03-19","claimed_date_precision":"day","is_vendor_dated":true,"first_observed_at":"2026-08-01T18:37:57.630436+00:00","observation_kind":"live_crawl","withdrawn_at":null,"changelog":"Modifications and Bug Fixes: 1. Optimized the issue of the Alarm not ringing in some cases. 2. Enhanced device stability. 3. Fixed some minor bugs.","disclosure_score":0.45,"mentions_security":false,"cve_ids":[],"download_url":null,"evidence":{"id":204247,"source_url":"https://www.tp-link.com/us/support/download/tapo-c420s1/v1/","fetched_at":"2026-09-29T03:24:18.738571+00:00","observed_at":"2026-09-29T03:24:18.738571+00:00","http_status":200,"content_sha256":"bbbdd3361d49eb0938f4d38880969e679a39a79a21791e7458a12ca13a94aeca","html":"//firmwarewatch.cc/evidence/204247","raw":"//firmwarewatch.cc/evidence/204247/raw"}},{"version":"Tapo C420(US)_V1_1.2.16 Build 20240122","channel":"stable","claimed_release_date":"2024-02-02","claimed_date_precision":"day","is_vendor_dated":true,"first_observed_at":"2026-08-01T18:37:57.630436+00:00","observation_kind":"live_crawl","withdrawn_at":null,"changelog":"Modifications and Bug Fixes: 1. Optimized the live streaming performance. 2. Optimized the AI detection performance. 3. Optimized the camera battery life. 4. Enhanced device stability. 5. Fixed some minor bugs.","disclosure_score":0.44,"mentions_security":false,"cve_ids":[],"download_url":null,"evidence":{"id":204134,"source_url":"https://www.tp-link.com/us/support/download/tapo-c420/v1/","fetched_at":"2026-09-29T03:21:09.502676+00:00","observed_at":"2026-09-29T03:21:09.502676+00:00","http_status":200,"content_sha256":"8bdecba26ff0bac4a81ae0d846d72a7a8876897f411c500d91f11a255518c906","html":"//firmwarewatch.cc/evidence/204134","raw":"//firmwarewatch.cc/evidence/204134/raw"}},{"version":"Tapo C420(US)_V1_1.2.15 Build 20231013","channel":"stable","claimed_release_date":"2023-12-26","claimed_date_precision":"day","is_vendor_dated":true,"first_observed_at":"2026-08-01T18:37:57.630436+00:00","observation_kind":"live_crawl","withdrawn_at":null,"changelog":"Modifications and Bug Fixes: 1. Added support for more functions in the Battery Status page to better know and record the battery usage details. 2. Added support for any quadrilateral area configuration under AI and Motion Detection Activity Zones. 3. Added support for different working modes with varying detection and recording parameters to balance performance and power consumption. 4. Optimized detection performance. 5. Optimized the camera battery life. 6. Fixed some minor bugs.","disclosure_score":0.55,"mentions_security":false,"cve_ids":[],"download_url":null,"evidence":{"id":204134,"source_url":"https://www.tp-link.com/us/support/download/tapo-c420/v1/","fetched_at":"2026-09-29T03:21:09.502676+00:00","observed_at":"2026-09-29T03:21:09.502676+00:00","http_status":200,"content_sha256":"8bdecba26ff0bac4a81ae0d846d72a7a8876897f411c500d91f11a255518c906","html":"//firmwarewatch.cc/evidence/204134","raw":"//firmwarewatch.cc/evidence/204134/raw"}},{"version":"Tapo C420(US)_V1_1.2.14 Build 20230829","channel":"stable","claimed_release_date":"2023-09-15","claimed_date_precision":"day","is_vendor_dated":true,"first_observed_at":"2026-08-01T18:37:57.630436+00:00","observation_kind":"live_crawl","withdrawn_at":null,"changelog":"Modifications and Bug Fixes: 1. Optimized the Motion Detection function. 2. Optimized the SD card recording function. 3. Fixed some minor bugs.","disclosure_score":0.49,"mentions_security":false,"cve_ids":[],"download_url":null,"evidence":{"id":204247,"source_url":"https://www.tp-link.com/us/support/download/tapo-c420s1/v1/","fetched_at":"2026-09-29T03:24:18.738571+00:00","observed_at":"2026-09-29T03:24:18.738571+00:00","http_status":200,"content_sha256":"bbbdd3361d49eb0938f4d38880969e679a39a79a21791e7458a12ca13a94aeca","html":"//firmwarewatch.cc/evidence/204247","raw":"//firmwarewatch.cc/evidence/204247/raw"}},{"version":"Tapo C420(US)_V1_1.2.12 Build 20230727","channel":"stable","claimed_release_date":"2023-08-16","claimed_date_precision":"day","is_vendor_dated":true,"first_observed_at":"2026-08-01T18:37:57.630436+00:00","observation_kind":"live_crawl","withdrawn_at":null,"changelog":"Modifications and Bug Fixes: 1. Add support for customizing Image Style and Brightness under Image Settings. 2. Fix some minor bugs.","disclosure_score":0.41,"mentions_security":false,"cve_ids":[],"download_url":null,"evidence":{"id":204247,"source_url":"https://www.tp-link.com/us/support/download/tapo-c420s1/v1/","fetched_at":"2026-09-29T03:24:18.738571+00:00","observed_at":"2026-09-29T03:24:18.738571+00:00","http_status":200,"content_sha256":"bbbdd3361d49eb0938f4d38880969e679a39a79a21791e7458a12ca13a94aeca","html":"//firmwarewatch.cc/evidence/204247","raw":"//firmwarewatch.cc/evidence/204247/raw"}},{"version":"Tapo C420(US)_V1_1.2.11 Build 20230726","channel":"stable","claimed_release_date":"2023-07-29","claimed_date_precision":"day","is_vendor_dated":true,"first_observed_at":"2026-08-01T18:37:57.630436+00:00","observation_kind":"live_crawl","withdrawn_at":null,"changelog":"Modifications and Bug Fixes: Fix the problem of false motion detection in some cases.","disclosure_score":0.32,"mentions_security":false,"cve_ids":[],"download_url":null,"evidence":{"id":204247,"source_url":"https://www.tp-link.com/us/support/download/tapo-c420s1/v1/","fetched_at":"2026-09-29T03:24:18.738571+00:00","observed_at":"2026-09-29T03:24:18.738571+00:00","http_status":200,"content_sha256":"bbbdd3361d49eb0938f4d38880969e679a39a79a21791e7458a12ca13a94aeca","html":"//firmwarewatch.cc/evidence/204247","raw":"//firmwarewatch.cc/evidence/204247/raw"}},{"version":"Tapo C420(US)_V1_1.2.9 Build 20230626","channel":"stable","claimed_release_date":"2023-07-12","claimed_date_precision":"day","is_vendor_dated":true,"first_observed_at":"2026-08-01T18:37:57.630436+00:00","observation_kind":"live_crawl","withdrawn_at":null,"changelog":"Modifications and Bug Fixes: 1. Added support for any quadrilateral area configuration under Activity Zones. 2. Added three new alarm tones and raise the alarm volume. 3. Optimized detection notification. 4. Improved detection clip integrity. 5. Improved PIR sensitivity. 6. Fixed some minor bugs.","disclosure_score":0.53,"mentions_security":false,"cve_ids":[],"download_url":null,"evidence":{"id":204247,"source_url":"https://www.tp-link.com/us/support/download/tapo-c420s1/v1/","fetched_at":"2026-09-29T03:24:18.738571+00:00","observed_at":"2026-09-29T03:24:18.738571+00:00","http_status":200,"content_sha256":"bbbdd3361d49eb0938f4d38880969e679a39a79a21791e7458a12ca13a94aeca","html":"//firmwarewatch.cc/evidence/204247","raw":"//firmwarewatch.cc/evidence/204247/raw"}},{"version":"Tapo C420(US)_V1_1.2.7 Build 20230426","channel":"stable","claimed_release_date":"2023-05-12","claimed_date_precision":"day","is_vendor_dated":true,"first_observed_at":"2026-08-01T18:37:57.630436+00:00","observation_kind":"live_crawl","withdrawn_at":null,"changelog":"Modifications and Bug Fixes: 1. Optimize Detection performance. 2. Fix some minor bugs.","disclosure_score":0.34,"mentions_security":false,"cve_ids":[],"download_url":null,"evidence":{"id":204247,"source_url":"https://www.tp-link.com/us/support/download/tapo-c420s1/v1/","fetched_at":"2026-09-29T03:24:18.738571+00:00","observed_at":"2026-09-29T03:24:18.738571+00:00","http_status":200,"content_sha256":"bbbdd3361d49eb0938f4d38880969e679a39a79a21791e7458a12ca13a94aeca","html":"//firmwarewatch.cc/evidence/204247","raw":"//firmwarewatch.cc/evidence/204247/raw"}},{"version":"Tapo C420(US)_V1_1.2.6 Build 20230224","channel":"stable","claimed_release_date":"2023-03-29","claimed_date_precision":"day","is_vendor_dated":true,"first_observed_at":"2026-08-01T18:37:57.630436+00:00","observation_kind":"live_crawl","withdrawn_at":null,"changelog":"Modifications and Bug Fixes: 1. Improve camera battery life. 2. Fix some minor bugs.","disclosure_score":0.41,"mentions_security":false,"cve_ids":[],"download_url":null,"evidence":{"id":204247,"source_url":"https://www.tp-link.com/us/support/download/tapo-c420s1/v1/","fetched_at":"2026-09-29T03:24:18.738571+00:00","observed_at":"2026-09-29T03:24:18.738571+00:00","http_status":200,"content_sha256":"bbbdd3361d49eb0938f4d38880969e679a39a79a21791e7458a12ca13a94aeca","html":"//firmwarewatch.cc/evidence/204247","raw":"//firmwarewatch.cc/evidence/204247/raw"}},{"version":"Tapo C420(US)_V1_1.2.5 Build 20230129","channel":"stable","claimed_release_date":"2023-02-14","claimed_date_precision":"day","is_vendor_dated":true,"first_observed_at":"2026-08-01T18:37:57.630436+00:00","observation_kind":"live_crawl","withdrawn_at":null,"changelog":"Modifications and Bug Fixes: 1. Enhance stability of the camera. 2. Fix some minor bugs.","disclosure_score":0.34,"mentions_security":false,"cve_ids":[],"download_url":null,"evidence":{"id":204247,"source_url":"https://www.tp-link.com/us/support/download/tapo-c420s1/v1/","fetched_at":"2026-09-29T03:24:18.738571+00:00","observed_at":"2026-09-29T03:24:18.738571+00:00","http_status":200,"content_sha256":"bbbdd3361d49eb0938f4d38880969e679a39a79a21791e7458a12ca13a94aeca","html":"//firmwarewatch.cc/evidence/204247","raw":"//firmwarewatch.cc/evidence/204247/raw"}},{"version":"Tapo C420(US)_V1_1.2.4 Build 20221208","channel":"stable","claimed_release_date":"2023-01-03","claimed_date_precision":"day","is_vendor_dated":true,"first_observed_at":"2026-08-01T18:37:57.630436+00:00","observation_kind":"live_crawl","withdrawn_at":null,"changelog":"Modifications and Bug Fixes: 1. Improved liveview performance. 2. Enhanced stability of the camera. 3. Improved performance of the camera. 4. Fixed some minor bugs.","disclosure_score":0.41,"mentions_security":false,"cve_ids":[],"download_url":null,"evidence":{"id":204247,"source_url":"https://www.tp-link.com/us/support/download/tapo-c420s1/v1/","fetched_at":"2026-09-29T03:24:18.738571+00:00","observed_at":"2026-09-29T03:24:18.738571+00:00","http_status":200,"content_sha256":"bbbdd3361d49eb0938f4d38880969e679a39a79a21791e7458a12ca13a94aeca","html":"//firmwarewatch.cc/evidence/204247","raw":"//firmwarewatch.cc/evidence/204247/raw"}}],"identifiers":[{"kind":"marketing_name","value":"Tapo C420","normalized":"tapo c420"}],"revisions":[{"slug":"tplink-tapo-c420-v1-26-us","hardware_revision":"v1.26","region_code":"US"},{"slug":"tplink-tapo-c420-v1-6-us","hardware_revision":"v1.6","region_code":"US"}],"evidence":{"archived_pages":3,"first_observed_at":"2026-08-01T18:37:57.630436+00:00"},"caveats":["observed_support.days is a lower bound: it runs from the first firmware we saw, because no source here publishes launch dates.","Patch latency is not computable for this product: its changelogs name no CVE ids."],"links":{"html":"//firmwarewatch.cc/devices/tplink-tapo-c420-v1-us","self":"//firmwarewatch.cc/api/v1/products/tplink-tapo-c420-v1-us.json","vendor":"//firmwarewatch.cc/api/v1/vendors/tplink.json","feed":"//firmwarewatch.cc/feeds/devices/tplink-tapo-c420-v1-us.xml","methodology":"//firmwarewatch.cc/api/v1/methodology.json"}}