{"cve":"CVE-2021-41436","nvd":{"published":"2021-11-19T12:15:09.390","modified":"2026-07-09T01:17:02.847","status":"Modified","description":"An HTTP request smuggling in web application in ASUS ROG Rapture GT-AX11000, RT-AX3000, RT-AX55, RT-AX56U, RT-AX56U_V2, RT-AX58U, RT-AX82U, RT-AX82U GUNDAM EDITION, RT-AX86 Series(RT-AX86U/RT-AX86S), RT-AX86U ZAKU II EDITION, RT-AX88U, RT-AX92U, TUF Gaming AX3000, TUF Gaming AX5400 (TUF-AX5400), ASUS ZenWiFi XD6, ASUS ZenWiFi AX (XT8) before 3.0.0.4.386.45898, and RT-AX68U before 3.0.0.4.386.45911, allows a remote unauthenticated attacker to DoS via sending a specially crafted HTTP packet.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-444"],"references":["https://rog.asus.com/networking/rog-rapture-gt-ax11000-model/helpdesk_bios","https://www.asus.com/Networking-IoT-Servers/Whole-Home-Mesh-WiFi-System/ZenWiFi-WiFi-Systems/ASUS-ZenWiFi-AX-XT8-/HelpDesk_BIOS/","https://www.asus.com/Networking-IoT-Servers/Whole-Home-Mesh-WiFi-System/ZenWiFi-WiFi-Systems/ASUS-ZenWiFi-XD6/HelpDesk_BIOS/","https://www.asus.com/Networking-IoT-Servers/WiFi-Routers/ASUS-WiFi-Routers/RT-AX3000/HelpDesk_BIOS/","https://www.asus.com/Networking-IoT-Servers/WiFi-Routers/ASUS-WiFi-Routers/RT-AX56U/HelpDesk_BIOS/"],"products":["asus:gt-ax11000_firmware","asus:rt-ax3000_firmware","asus:rt-ax55_firmware","asus:rt-ax56u_firmware","asus:rt-ax56u_v2_firmware","asus:rt-ax58u_firmware","asus:rt-ax68u_firmware","asus:rt-ax82u_firmware","asus:rt-ax82u_gundam_edition_firmware","asus:rt-ax86s_firmware","asus:rt-ax86u_firmware","asus:rt-ax86u_zaku_ii_edition_firmware","asus:rt-ax88u_firmware","asus:rt-ax92u_firmware","asus:tuf-ax5400_firmware","asus:tuf_gaming_ax3000_firmware","asus:zenwifi_ax_\\(xt8\\)_firmware","asus:zenwifi_xd6_firmware"],"source":"nvd","synced_at":"2026-10-19T21:25:41.256909649+00:00"},"epss":{"cve":"CVE-2021-41436","score":0.04952,"percentile":0.9217,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}