{"id":"CVE-2021-32030","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-32030","generatedAt":"2026-10-27T23:26:01.759Z","title":"ASUS Routers Improper Authentication Vulnerability","description":"The administrator application on ASUS GT-AC2900 devices before 3.0.0.4.386.42643 and Lyra Mini before 3.0.0.4_384_46630 allows authentication bypass when processing remote input from an unauthenticated user, leading to unauthorized access to the administrator interface. This relates to handle_request in router/httpd/httpd.c and auth_check in web_hook.o. An attacker-supplied value of '\\0' matches the device's default value of '\\0' in some situations. Note: All versions of Lyra Mini and earlier which are unsupported (End-of-Life, EOL) are also affected by this vulnerability, Consumers can mitigate this vulnerability by disabling the remote access features from WAN.","published":"2021-05-06T15:15:08.000Z","lastModified":"2026-06-17T03:52:42.000Z","status":"Analyzed","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-287"],"affected":["asus/lyra mini firmware","asus/gt-ac2900 firmware"],"epss":{"score":0.99393,"percentile":0.9994,"date":"2026-10-26","history":[]},"kev":{"listed":true,"dateAdded":"2025-06-02","dueDate":"2025-06-23","knownRansomwareCampaignUse":"Unknown","notes":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.\nhttps://www.asus.com/us/supportonly/lyra%20mini/helpdesk_bios/ ; https://www.asus.com/us/supportonly/rog%20rapture%20gt-ac2900/helpdesk_bios/; https://nvd.nist.gov/vuln/detail/CVE-2021-32030"},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 23 June 2025). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"https://github.com/atredispartners/advisories/blob/master/ATREDIS-2020-0010.md","tags":["Broken Link","Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://www.asus.com/Networking-IoT-Servers/WiFi-Routers/ASUS-Gaming-Routers/RT-AC2900/HelpDesk_BIOS/","tags":["Product"],"source":"cve@mitre.org"},{"url":"https://www.asus.com/us/supportonly/lyra%20mini/helpdesk_bios/","tags":["Product"],"source":"cve@mitre.org"},{"url":"https://www.atredis.com/blog/2021/4/30/asus-authentication-bypass","tags":["Exploit"],"source":"cve@mitre.org"},{"url":"https://github.com/atredispartners/advisories/blob/master/ATREDIS-2020-0010.md","tags":["Broken Link","Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.asus.com/Networking-IoT-Servers/WiFi-Routers/ASUS-Gaming-Routers/RT-AC2900/HelpDesk_BIOS/","tags":["Product"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-32030","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-32030","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}