{"slug":"tplink-archer-ax21-v1-2-us","display_name":"Archer AX21","model_name":"Archer AX21","hardware_revision":"v1.2","region_code":"US","category":"router","vendor":{"slug":"tplink","name":"TP-Link"},"verdict":{"status":"slowing","label":"Slowing down","confidence":"high","reason":"378 days since the last release against a median gap of 126 (3.0x)","algorithm_version":"lifecycle-1","computed_at":"2026-09-30T01:14:39.262864+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":12,"first_release_date":"2020-06-12","last_release_date":"2025-09-17","days_since_last_release":378,"median_gap_days":126.0,"cadence_multiple":3.0,"observed_support":{"days":1923,"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)_V1.20_1.3.8 Build 20250424","channel":"stable","claimed_release_date":"2025-09-17","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":"Enhancements 1. 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Fixed the bug that if you manually configure DNS for IPv4 in PPPoE co-session scenarios, the ISP DNS is still configured for domain name resolution; 3. Fixed the bug that the RA configuration does not take effect correctly in specific cases during IPv6; 4. Fixed the bug that when enabling PPPoEV6, the field carried by PPPoE dial-up does not contain the service name; 5. Fixed the bug that the TimeMachine does not work under Macos13.1.","disclosure_score":0.58,"mentions_security":true,"cve_ids":[],"download_url":"https://static.tp-link.com/upload/firmware/2022/202212/20221202/Archer AX21(US)_V1.2_221125.zip","evidence":{"id":201813,"source_url":"https://www.tp-link.com/us/support/download/archer-ax21/v1.20/","fetched_at":"2026-09-29T02:09:43.441431+00:00","observed_at":"2026-09-29T02:09:43.441431+00:00","http_status":200,"content_sha256":"b37ea281fb6bd89080dcbf6b7cc6e856e3b452a7b1d6d6569b77444894691af3","html":"//firmwarewatch.cc/evidence/201813","raw":"//firmwarewatch.cc/evidence/201813/raw"}},{"version":"Archer AX21(US)_V1.2_221103","channel":"stable","claimed_release_date":"2022-11-17","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":"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/2022/202211/20221117/Archer AX21(US)_V1.2_221103.zip","evidence":{"id":201813,"source_url":"https://www.tp-link.com/us/support/download/archer-ax21/v1.20/","fetched_at":"2026-09-29T02:09:43.441431+00:00","observed_at":"2026-09-29T02:09:43.441431+00:00","http_status":200,"content_sha256":"b37ea281fb6bd89080dcbf6b7cc6e856e3b452a7b1d6d6569b77444894691af3","html":"//firmwarewatch.cc/evidence/201813","raw":"//firmwarewatch.cc/evidence/201813/raw"}},{"version":"Archer AX21(US)_V1.2_211231","channel":"stable","claimed_release_date":"2022-01-28","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":"Enhancement: 1.Improved wired and wireless stability; 2.Maximum wireless devices on single band increased to 128; 3.Optimized IPv6 feature; 4.Updated dnsmasq version. Bug Fixed: 1.Fixed the bug that the router has unstable Internet connection in some cases; 2.Fixed the bugs on the Web UI; 3.Fixed the bug that parent control will take affect one hour earlier after the end of daylight saving time.","disclosure_score":0.54,"mentions_security":false,"cve_ids":[],"download_url":"https://static.tp-link.com/upload/firmware/2022/202201/20220128/Archer AX21(US)_V1.2_211231.zip","evidence":{"id":201813,"source_url":"https://www.tp-link.com/us/support/download/archer-ax21/v1.20/","fetched_at":"2026-09-29T02:09:43.441431+00:00","observed_at":"2026-09-29T02:09:43.441431+00:00","http_status":200,"content_sha256":"b37ea281fb6bd89080dcbf6b7cc6e856e3b452a7b1d6d6569b77444894691af3","html":"//firmwarewatch.cc/evidence/201813","raw":"//firmwarewatch.cc/evidence/201813/raw"}},{"version":"Archer AX21(US)_V1.2_210901","channel":"stable","claimed_release_date":"2021-11-22","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. Improved the performance of the wireless network; 2. Improved the static routing feature; 3. Modified the default hostname of the dynamic IP connection. Bug Fixed: 1. Updated the version of the Dropbear and fixed some Dropbear vulnerabilities; 2. Updated the version of the OpenSSL and fixed some OpenSSL vulnerabilities; 3. Fixed some web UI errors; 4. Fixed the bug that the result of the HomeShield traffic statistic feature is incorrect; 5. Fixed the bug that the router sometimes couldn't recognize exFAT format USB disk correctly; 6. Fixed the bug that sometimes the number of the client list is incorrect when the router works as the AP mode; 7. Fixed the bug that the DNS server will be cleared after the router restarts when the router works as the AP mode; 8. Fixed some issues that the OpenVPN client feature doesn't work normally.","disclosure_score":0.63,"mentions_security":true,"cve_ids":[],"download_url":"https://static.tp-link.com/upload/firmware/2021/202111/20211122/Archer AX21(US)_V1.2_210901.zip","evidence":{"id":201813,"source_url":"https://www.tp-link.com/us/support/download/archer-ax21/v1.20/","fetched_at":"2026-09-29T02:09:43.441431+00:00","observed_at":"2026-09-29T02:09:43.441431+00:00","http_status":200,"content_sha256":"b37ea281fb6bd89080dcbf6b7cc6e856e3b452a7b1d6d6569b77444894691af3","html":"//firmwarewatch.cc/evidence/201813","raw":"//firmwarewatch.cc/evidence/201813/raw"}},{"version":"Archer AX21(US)_V1.2_210521","channel":"stable","claimed_release_date":"2021-06-15","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. Optimized the Parental Control feature; 2. Optimized the Client List on Tether App; 3. Optimized some display items on Web UI; 4. Optimized the Quick Setup. Bug Fixed: 1. Fixed the FragAttacks vulnerabilities; 2. Fixed the bug that iPhone may be asked to connect to 2.4G network when Smart Connect is enabled; 3. Fixed the bug that the PPTP/L2TP VPN clients cannot connect to the server successfully when the username or password contains ' and # characters; 4. Fixed the bug that some Apps can access USB drive without entering the user and password; 5. Fixed the bug that the hostname is displayed as a messy code or asterisks.","disclosure_score":0.63,"mentions_security":true,"cve_ids":[],"download_url":"https://static.tp-link.com/firmware/2021/202106/20210615/Archer AX21(US)_v1.20_210521.zip","evidence":{"id":201813,"source_url":"https://www.tp-link.com/us/support/download/archer-ax21/v1.20/","fetched_at":"2026-09-29T02:09:43.441431+00:00","observed_at":"2026-09-29T02:09:43.441431+00:00","http_status":200,"content_sha256":"b37ea281fb6bd89080dcbf6b7cc6e856e3b452a7b1d6d6569b77444894691af3","html":"//firmwarewatch.cc/evidence/201813","raw":"//firmwarewatch.cc/evidence/201813/raw"}},{"version":"Archer AX21(US)_V1.2_210304","channel":"stable","claimed_release_date":"2021-04-12","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 and VPN Server feature; 2. Added QoS Schedule feature; 3. Added a prompt when the negotiation rate of WAN port is 100Mbps; 4. Added the feature of displaying the time length of Internet connection; 5. Added Feedback Option; 6. Added configuration items and display items on Tether APP; 7. Optimized the Parental Control feature; 8. Optimized the Client List; 9. Optimized coverage of 2.4G network; 10. Moved the language setting of the Web UI to the login page; 11. The wireless default encryption method is modified to WPA2+AES. Bug Fixed: 1. Fixed the bug that Web UI cannot synchronize the operation of deleting UPNP entries; 2. Fixed the bug that the Clients can not be displayed on Tether APP after the PLC with OneMesh feature is connected to the network; 3. Fixed the bug that the LED Control setting is invalid after rebooting the router; 4. Fixed the bug that Alexa fails to upload client information; 5. Fixed some bugs that could cause the router to crash or reboot; 6. Fixed the bug that the router incorrectly blocked Internet requests; 7. Fixed the bug of failed to save system log in AP mode; 8. Fixed the bug that the USB capacity was displayed incorrectly.","disclosure_score":0.64,"mentions_security":false,"cve_ids":[],"download_url":"https://static.tp-link.com/2021/202104/20210412/Archer AX21(US)_v1.2_210304.zip","evidence":{"id":201813,"source_url":"https://www.tp-link.com/us/support/download/archer-ax21/v1.20/","fetched_at":"2026-09-29T02:09:43.441431+00:00","observed_at":"2026-09-29T02:09:43.441431+00:00","http_status":200,"content_sha256":"b37ea281fb6bd89080dcbf6b7cc6e856e3b452a7b1d6d6569b77444894691af3","html":"//firmwarewatch.cc/evidence/201813","raw":"//firmwarewatch.cc/evidence/201813/raw"}},{"version":"Archer AX21(US)_V1.2_201202","channel":"stable","claimed_release_date":"2020-12-22","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 Amazon Frustration-Free Setup; 2. Optimized the latency of Alexa Smart Home API. Bug Fixed: 1. Fixed the bug that keywords cannot be added to the filter content in the parental control profile.","disclosure_score":0.5,"mentions_security":false,"cve_ids":[],"download_url":"https://static.tp-link.com/2020/202012/20201222/Archer AX21(US)_V1.2_201202.zip","evidence":{"id":201813,"source_url":"https://www.tp-link.com/us/support/download/archer-ax21/v1.20/","fetched_at":"2026-09-29T02:09:43.441431+00:00","observed_at":"2026-09-29T02:09:43.441431+00:00","http_status":200,"content_sha256":"b37ea281fb6bd89080dcbf6b7cc6e856e3b452a7b1d6d6569b77444894691af3","html":"//firmwarewatch.cc/evidence/201813","raw":"//firmwarewatch.cc/evidence/201813/raw"}},{"version":"Archer AX21(US)_V1.2_201118","channel":"stable","claimed_release_date":"2020-12-03","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":"Released","disclosure_score":0.3,"mentions_security":false,"cve_ids":[],"download_url":"https://static.tp-link.com/2020/202012/20201203/Archer AX21(US)_V1.2_201118.zip","evidence":{"id":201813,"source_url":"https://www.tp-link.com/us/support/download/archer-ax21/v1.20/","fetched_at":"2026-09-29T02:09:43.441431+00:00","observed_at":"2026-09-29T02:09:43.441431+00:00","http_status":200,"content_sha256":"b37ea281fb6bd89080dcbf6b7cc6e856e3b452a7b1d6d6569b77444894691af3","html":"//firmwarewatch.cc/evidence/201813","raw":"//firmwarewatch.cc/evidence/201813/raw"}},{"version":"Archer AX21(US)_V1.2_200518","channel":"stable","claimed_release_date":"2020-06-12","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 for Archer AX21(US) V1.20","disclosure_score":0.31,"mentions_security":false,"cve_ids":[],"download_url":"https://static.tp-link.com/2020/202006/20200612/Archer AX21(US)_V1.20_200518.zip","evidence":{"id":201813,"source_url":"https://www.tp-link.com/us/support/download/archer-ax21/v1.20/","fetched_at":"2026-09-29T02:09:43.441431+00:00","observed_at":"2026-09-29T02:09:43.441431+00:00","http_status":200,"content_sha256":"b37ea281fb6bd89080dcbf6b7cc6e856e3b452a7b1d6d6569b77444894691af3","html":"//firmwarewatch.cc/evidence/201813","raw":"//firmwarewatch.cc/evidence/201813/raw"}}],"identifiers":[{"kind":"marketing_name","value":"Archer AX21","normalized":"archer ax21"}],"revisions":[{"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-v3-6-us","hardware_revision":"v3.6","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-v1-2-us","self":"//firmwarewatch.cc/api/v1/products/tplink-archer-ax21-v1-2-us.json","vendor":"//firmwarewatch.cc/api/v1/vendors/tplink.json","feed":"//firmwarewatch.cc/feeds/devices/tplink-archer-ax21-v1-2-us.xml","methodology":"//firmwarewatch.cc/api/v1/methodology.json"}}