{"slug":"tplink-archer-ax21-v3-6-us","display_name":"Archer AX21","model_name":"Archer AX21","hardware_revision":"v3.6","region_code":"US","category":"router","vendor":{"slug":"tplink","name":"TP-Link"},"verdict":{"status":"quiet","label":"Gone quiet","confidence":"high","reason":"735 days since the last release against a median gap of 98 (7.5x)","algorithm_version":"lifecycle-1","computed_at":"2026-09-30T01:14:39.237814+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":7,"first_release_date":"2022-08-02","last_release_date":"2024-09-25","days_since_last_release":735,"median_gap_days":98.5,"cadence_multiple":7.462,"observed_support":{"days":785,"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 AX21(US)_V3.6_1.2.1 Build 20240809","channel":"stable","claimed_release_date":"2024-09-25","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. Add the support of the wired backhual on the Easymesh; 2. Add the support of the Tether Easymesh; 3. Add the support of the VPN Client; 4. Add the support of the IoT network; 5. Add the support of the IoT security; 6. Add the button of the flow control; 7. Add the support that getting the configuration from the old router in Quick Setup; 8. Add the support of the Access Control, WPS, TP-Link ID, LED control, wireless schedule and others function on the AP mode; 9. Enhance device security.","disclosure_score":0.6,"mentions_security":true,"cve_ids":[],"download_url":"https://static.tp-link.com/upload/firmware/2024/202409/20240925/Archer AX21(US)_V3_240809.zip","evidence":{"id":201808,"source_url":"https://www.tp-link.com/us/support/download/archer-ax21/v3.60/","fetched_at":"2026-09-29T02:09:33.425921+00:00","observed_at":"2026-09-29T02:09:33.425921+00:00","http_status":200,"content_sha256":"63d1dd647dbaef8c053bb20edac828c4cf86c295d2f8cf252d544a8737a7e32c","html":"//firmwarewatch.cc/evidence/201808","raw":"//firmwarewatch.cc/evidence/201808/raw"}},{"version":"Archer AX21(US)_V3.6_230621","channel":"stable","claimed_release_date":"2023-06-26","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: Enhance device security.","disclosure_score":0.06,"mentions_security":true,"cve_ids":[],"download_url":"https://static.tp-link.com/upload/firmware/2023/202306/20230626/Archer AX21(US)_V3_230621.zip","evidence":{"id":201808,"source_url":"https://www.tp-link.com/us/support/download/archer-ax21/v3.60/","fetched_at":"2026-09-29T02:09:33.425921+00:00","observed_at":"2026-09-29T02:09:33.425921+00:00","http_status":200,"content_sha256":"63d1dd647dbaef8c053bb20edac828c4cf86c295d2f8cf252d544a8737a7e32c","html":"//firmwarewatch.cc/evidence/201808","raw":"//firmwarewatch.cc/evidence/201808/raw"}},{"version":"Archer AX21(US)_V3.6_1.1.4 Build 20230219","channel":"stable","claimed_release_date":"2023-03-17","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":"New Features/Enhancement: 1. Added EasyMesh feature; 2. Added Google Assistant feature; 3. Added Access Time Control and Bandwidth Control feature on Guest Network; 4. Added Advanced Wireless Settings on Tether App; 5. Added Speed Limit feature; 6. Added new time zones into the system time feature; 7. Increase the maximum number of entries for port forwarding to 64; 8. Optimize the client list UI; 9. Optimize the HomeShield feature. Bug Fixed: 1. Fixed some security issues.","disclosure_score":0.57,"mentions_security":true,"cve_ids":[],"download_url":"https://static.tp-link.com/upload/firmware/2023/202303/20230317/Archer AX21(US)_V3_230219.zip","evidence":{"id":201808,"source_url":"https://www.tp-link.com/us/support/download/archer-ax21/v3.60/","fetched_at":"2026-09-29T02:09:33.425921+00:00","observed_at":"2026-09-29T02:09:33.425921+00:00","http_status":200,"content_sha256":"63d1dd647dbaef8c053bb20edac828c4cf86c295d2f8cf252d544a8737a7e32c","html":"//firmwarewatch.cc/evidence/201808","raw":"//firmwarewatch.cc/evidence/201808/raw"}},{"version":"Archer AX21(US)_V3.6_230219","channel":"stable","claimed_release_date":"2023-03-08","claimed_date_precision":"day","is_vendor_dated":true,"first_observed_at":"2026-08-13T02:00:00.107884+00:00","observation_kind":"live_crawl","withdrawn_at":null,"changelog":"Modifications and Bug Fixes: 1. Add the EasyMesh function; 2. Add the Access Time Control and Bandwidth Control on the Guest Network; 3. Add the support of the TCP DNS; 4. Add the support of Google Assistant; 5. Add the wireless advanced setting on the Tether; 6. Add the Speed Limit function; 7. The maximum number of entries in Port Forwarding has increased to 64; 8. Improve device security.","disclosure_score":0.57,"mentions_security":true,"cve_ids":[],"download_url":"https://static.tp-link.com/upload/firmware/2023/202303/20230308/Archer AX21(US)_V3_230219.zip","evidence":{"id":201808,"source_url":"https://www.tp-link.com/us/support/download/archer-ax21/v3.60/","fetched_at":"2026-09-29T02:09:33.425921+00:00","observed_at":"2026-09-29T02:09:33.425921+00:00","http_status":200,"content_sha256":"63d1dd647dbaef8c053bb20edac828c4cf86c295d2f8cf252d544a8737a7e32c","html":"//firmwarewatch.cc/evidence/201808","raw":"//firmwarewatch.cc/evidence/201808/raw"}},{"version":"Archer AX21(US)_V3.6_1.1.3 Build 20221125","channel":"stable","claimed_release_date":"2022-12-02","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/Enhancement: 1. Upgrade the version of the dnsmasq; 2. Enhance device security; 3. Fixed the bug that the TimeMachine does not work under Macos13.1","disclosure_score":0.49,"mentions_security":true,"cve_ids":[],"download_url":"https://static.tp-link.com/upload/firmware/2022/202212/20221202/Archer AX21(US)_V3_221125.zip","evidence":{"id":201808,"source_url":"https://www.tp-link.com/us/support/download/archer-ax21/v3.60/","fetched_at":"2026-09-29T02:09:33.425921+00:00","observed_at":"2026-09-29T02:09:33.425921+00:00","http_status":200,"content_sha256":"63d1dd647dbaef8c053bb20edac828c4cf86c295d2f8cf252d544a8737a7e32c","html":"//firmwarewatch.cc/evidence/201808","raw":"//firmwarewatch.cc/evidence/201808/raw"}},{"version":"Archer AX21(US)_V3.6_1.1.2 Build 20221016","channel":"stable","claimed_release_date":"2022-11-24","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":"Improved the stability of the system.","disclosure_score":0.06,"mentions_security":false,"cve_ids":[],"download_url":"https://static.tp-link.com/upload/firmware/2022/202212/20221226/Archer AX21(US)_V3_221016.zip","evidence":{"id":201808,"source_url":"https://www.tp-link.com/us/support/download/archer-ax21/v3.60/","fetched_at":"2026-09-29T02:09:33.425921+00:00","observed_at":"2026-09-29T02:09:33.425921+00:00","http_status":200,"content_sha256":"63d1dd647dbaef8c053bb20edac828c4cf86c295d2f8cf252d544a8737a7e32c","html":"//firmwarewatch.cc/evidence/201808","raw":"//firmwarewatch.cc/evidence/201808/raw"}},{"version":"Archer AX21(US)_V3.6_1.1.1 Build 20220603","channel":"stable","claimed_release_date":"2022-08-02","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/Enhancement: 1. Added VPN client; 2. Added L2TP/IPsec VPN server; 3. Optimized Online Client List feature under AP mode.","disclosure_score":0.48,"mentions_security":false,"cve_ids":[],"download_url":"https://static.tp-link.com/upload/firmware/2022/202208/20220802/Archer AX21(US)_V3_220603.zip","evidence":{"id":201808,"source_url":"https://www.tp-link.com/us/support/download/archer-ax21/v3.60/","fetched_at":"2026-09-29T02:09:33.425921+00:00","observed_at":"2026-09-29T02:09:33.425921+00:00","http_status":200,"content_sha256":"63d1dd647dbaef8c053bb20edac828c4cf86c295d2f8cf252d544a8737a7e32c","html":"//firmwarewatch.cc/evidence/201808","raw":"//firmwarewatch.cc/evidence/201808/raw"}}],"identifiers":[{"kind":"marketing_name","value":"Archer AX21","normalized":"archer ax21"}],"revisions":[{"slug":"tplink-archer-ax21-v1-2-us","hardware_revision":"v1.2","region_code":"US"},{"slug":"tplink-archer-ax21-v1-26-us","hardware_revision":"v1.26","region_code":"US"},{"slug":"tplink-archer-ax21-v2","hardware_revision":"v2","region_code":""},{"slug":"tplink-archer-ax21-v2-us","hardware_revision":"v2","region_code":"US"},{"slug":"tplink-archer-ax21-v2-6-us","hardware_revision":"v2.6","region_code":"US"},{"slug":"tplink-archer-ax21-v3-us","hardware_revision":"v3","region_code":"US"},{"slug":"tplink-archer-ax21-v4","hardware_revision":"v4","region_code":""},{"slug":"tplink-archer-ax21-v4-6-us","hardware_revision":"v4.6","region_code":"US"},{"slug":"tplink-archer-ax21-v5-46-us","hardware_revision":"v5.46","region_code":"US"},{"slug":"tplink-archer-ax21-v5-6-us","hardware_revision":"v5.6","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-ax21-v3-6-us","self":"//firmwarewatch.cc/api/v1/products/tplink-archer-ax21-v3-6-us.json","vendor":"//firmwarewatch.cc/api/v1/vendors/tplink.json","feed":"//firmwarewatch.cc/feeds/devices/tplink-archer-ax21-v3-6-us.xml","methodology":"//firmwarewatch.cc/api/v1/methodology.json"}}