{"slug":"tplink-archer-c4000-v2-us","display_name":"Archer C4000","model_name":"Archer C4000","hardware_revision":"v2","region_code":"US","category":"router","vendor":{"slug":"tplink","name":"TP-Link"},"verdict":{"status":"active","label":"Actively updated","confidence":"high","reason":"365 days since the last release against a median gap of 638 (0.6x)","algorithm_version":"lifecycle-1","computed_at":"2026-09-30T02:14:44.487934+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":5,"first_release_date":"2018-04-23","last_release_date":"2025-09-30","days_since_last_release":365,"median_gap_days":638.0,"cadence_multiple":0.572,"observed_support":{"days":2717,"is_floor":true,"measured_from":"first_release"},"promise":{"end_date":null,"is_estimated":false,"is_floor":false,"honoured":null,"basis":"no_eol_announcement"},"cve_patch_latency_days":{"median":null,"measurable":false}},"releases":[{"version":"Archer C4000(US)_V2_1.2.1 Build 20250919","channel":"stable","claimed_release_date":"2025-09-30","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":"New Features/Enhancement: 1. 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Fixed some security issues. 2. Fixed the bug that parental control doesn't take effect.","disclosure_score":0.41,"mentions_security":true,"cve_ids":[],"download_url":"https://static.tp-link.com/upload/firmware/2023/202309/20230915/Archer C4000(US)_V2_230907.zip","evidence":{"id":203616,"source_url":"https://www.tp-link.com/us/support/download/archer-c4000/v2/","fetched_at":"2026-09-29T03:07:25.499211+00:00","observed_at":"2026-09-29T03:07:25.499211+00:00","http_status":200,"content_sha256":"08fff611238529f4a95f63b497b2a976e1e72b93bc14efad0261597c46f84790","html":"//firmwarewatch.cc/evidence/203616","raw":"//firmwarewatch.cc/evidence/203616/raw"}},{"version":"Archer C4000(US)_V2_190827","channel":"stable","claimed_release_date":"2019-11-28","claimed_date_precision":"day","is_vendor_dated":true,"first_observed_at":"2026-08-25T02:00:00.191624+00:00","observation_kind":"live_crawl","withdrawn_at":null,"changelog":"New Features/Enhancements: 1. Improved the stability and performance of the device; 2. Optimized the bed time of parental control; 3. Improved portal function; 4. Optimized Qos function. Bug fixed: 1. Fixed the bug that office files can't be edited normally through Samba path; 2. Fixed the bug that sometimes the router can't scan USB disk normally; 3. Fixed the bug that the wireless network may become unstable under L2TP dialing type; 4. Fixed the bug that sometimes homecare module affects the performance of the device.","disclosure_score":0.58,"mentions_security":false,"cve_ids":[],"download_url":"https://static.tp-link.com/2019/201911/20191128/Archer C4000(US)_V2_190827.zip","evidence":{"id":203616,"source_url":"https://www.tp-link.com/us/support/download/archer-c4000/v2/","fetched_at":"2026-09-29T03:07:25.499211+00:00","observed_at":"2026-09-29T03:07:25.499211+00:00","http_status":200,"content_sha256":"08fff611238529f4a95f63b497b2a976e1e72b93bc14efad0261597c46f84790","html":"//firmwarewatch.cc/evidence/203616","raw":"//firmwarewatch.cc/evidence/203616/raw"}},{"version":"Archer C4000(US)_V2_180322","channel":"stable","claimed_release_date":"2018-04-23","claimed_date_precision":"day","is_vendor_dated":true,"first_observed_at":"2026-08-25T02:00:00.191624+00:00","observation_kind":"live_crawl","withdrawn_at":null,"changelog":"First firmware released.","disclosure_score":0.3,"mentions_security":false,"cve_ids":[],"download_url":"https://static.tp-link.com/2018/201804/20180423/Archer C4000(US)_V2_180322.zip","evidence":{"id":203616,"source_url":"https://www.tp-link.com/us/support/download/archer-c4000/v2/","fetched_at":"2026-09-29T03:07:25.499211+00:00","observed_at":"2026-09-29T03:07:25.499211+00:00","http_status":200,"content_sha256":"08fff611238529f4a95f63b497b2a976e1e72b93bc14efad0261597c46f84790","html":"//firmwarewatch.cc/evidence/203616","raw":"//firmwarewatch.cc/evidence/203616/raw"}}],"identifiers":[{"kind":"marketing_name","value":"Archer C4000","normalized":"archer c4000"}],"revisions":[{"slug":"tplink-archer-c4000-v2","hardware_revision":"v2","region_code":""},{"slug":"tplink-archer-c4000-v3-us","hardware_revision":"v3","region_code":"US"}],"evidence":{"archived_pages":1,"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-archer-c4000-v2-us","self":"//firmwarewatch.cc/api/v1/products/tplink-archer-c4000-v2-us.json","vendor":"//firmwarewatch.cc/api/v1/vendors/tplink.json","feed":"//firmwarewatch.cc/feeds/devices/tplink-archer-c4000-v2-us.xml","methodology":"//firmwarewatch.cc/api/v1/methodology.json"}}