CVE-2021-32030The 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 unauthenticat…
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It affects asus lyra_mini_firmware and 1 other product. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Jun 2, 2025; federal agencies had to remediate by Jun 23, 2025. Treat that date as your deadline.
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Free account, 1 product
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.
- CVSS
- 9.8 CRITICAL (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-287
- Known exploited
- Added to CISA KEV Jun 2, 2025; federal remediation due Jun 23, 2025Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- EPSS (exploitation in the next 30 days)
- 99.39% (percentile 100)
- Assigned by
- mitre
- NVD analysis
- Analyzed
- Record last updated
- Oct 21, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
asus lyra_mini_firmware asus:lyra_mini_firmware | before 3.0.0.4.384.46630 | NVD |
asus gt-ac2900_firmware asus:gt-ac2900_firmware | before 3.0.0.4.386.42643 | NVD |
References
- https://www.asus.com/Networking-IoT-Servers/WiFi-Routers/ASUS-Gaming-Routers/RT-AC2900/HelpDesk_BIOS/product
- https://github.com/atredispartners/advisories/blob/master/ATREDIS-2020-0010.mdbroken-link, exploit, third-party-advisory
- https://www.atredis.com/blog/2021/4/30/asus-authentication-bypassexploit
- https://www.asus.com/us/supportonly/lyra%20mini/helpdesk_bios/product
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-32030us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.