{"slug":"asus-rt-ac66u-b1-3","display_name":"RT_AC66U_B1","model_name":"RT_AC66U_B1","hardware_revision":"","region_code":"","category":"router","vendor":{"slug":"asus","name":"ASUS"},"verdict":{"status":"quiet","label":"Gone quiet","confidence":"low","reason":"1749 days of silence, past the 730-day floor that applies where there is no cadence to compare against","algorithm_version":"lifecycle-1","computed_at":"2026-09-30T02:14:47.518634+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":1,"first_release_date":"2021-12-16","last_release_date":"2021-12-16","days_since_last_release":1749,"median_gap_days":null,"cadence_multiple":null,"observed_support":{"days":0,"is_floor":true,"measured_from":"first_release"},"promise":{"end_date":null,"is_estimated":false,"is_floor":false,"honoured":null,"basis":null},"cve_patch_latency_days":{"median":null,"measurable":false}},"releases":[{"version":"3.0.0.4.386.45987","channel":"stable","claimed_release_date":"2021-12-16","claimed_date_precision":"day","is_vendor_dated":true,"first_observed_at":"2026-08-02T11:15:35.628116+00:00","observation_kind":"live_crawl","withdrawn_at":null,"changelog":"1. Fixed Let's encrypt related bugs. 2. Fixed httpd vulnerability 3. Fixed stack overflow vulnerability 4. Fixed DoS vulnerabilityThanks for the contribution of Fans0n、le3d1ng、Mwen、daliy yang from 360 Future Security Labs5. Fixed AiMesh web page multi-language issues.6. Fixed Stored XSS vulnerability.7. Fixed CVE-2021-41435, CVE-2021-41436.Thanks to Efstratios Chatzoglou, University of the AegeanGeorgios Kambourakis, European Commission at the European Joint Research CentreConstantinos Kolias, University of Idaho.8. Fixed Stack overflow vulnerability. Thanks to Jixing Wang (@chamd5) contribution.9. Fixed information disclosure vulnerability .Thanks to CataLpa from DBappSecurity Co.,Ltd Hatlab and 360 Alpha Lab contribution.10.Fixed XSS vulnerability11.Fixed SQL injection vulnerability12.Fixed PLC path traversal vulnerability13.Fixed Stack overflow vulnerability Thanks to HP of Cyber Kunlun Lab","disclosure_score":0.99,"mentions_security":true,"cve_ids":["CVE-2021-41435","CVE-2021-41436"],"download_url":null,"evidence":{"id":203464,"source_url":"https://www.asus.com/networking-iot-servers/wifi-routers/asus-wifi-routers/rt-ac66u-b1/helpdesk_bios?model2Name=RT-AC66U-B1","fetched_at":"2026-09-29T03:03:43.617421+00:00","observed_at":"2026-09-29T03:03:43.617421+00:00","http_status":200,"content_sha256":"2f8c4c399417c7c23e7e443e406f39227fc37e00405e56e4f0d6551deeedbfeb","html":"//firmwarewatch.cc/evidence/203464","raw":"//firmwarewatch.cc/evidence/203464/raw"}}],"identifiers":[{"kind":"marketing_name","value":"RT_AC66U_B1","normalized":"rt ac66u b1"}],"revisions":[],"evidence":{"archived_pages":1,"first_observed_at":"2026-08-02T11:15:35.628116+00:00"},"caveats":["Patch latency is not computable for this product: its changelogs name no CVE ids."],"links":{"html":"//firmwarewatch.cc/devices/asus-rt-ac66u-b1-3","self":"//firmwarewatch.cc/api/v1/products/asus-rt-ac66u-b1-3.json","vendor":"//firmwarewatch.cc/api/v1/vendors/asus.json","feed":"//firmwarewatch.cc/feeds/devices/asus-rt-ac66u-b1-3.xml","methodology":"//firmwarewatch.cc/api/v1/methodology.json"}}