# CVE-2021-32030

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.

- Page: https://www.vulneraibility.com/cve/CVE-2021-32030
- CVSS: 9.8
- Known exploited: yes, in CISA KEV since 2025-06-02; CISA due date 2025-06-23
- EPSS: 99.39%
- Detection templates only, no public exploit found: 1 Nuclei template
- CISA SSVC: exploitation active, automatable yes, technical impact total (assessed 2025-06-06)
- Weakness: CWE-287
- Published: 2021-05-06

## Affected

- asus:lyra_mini_firmware
- asus:gt-ac2900_firmware

## References

- [other] https://www.asus.com/Networking-IoT-Servers/WiFi-Routers/ASUS-Gaming-Routers/RT-AC2900/HelpDesk_BIOS/
- [other] https://github.com/atredispartners/advisories/blob/master/ATREDIS-2020-0010.md
- [other] https://www.atredis.com/blog/2021/4/30/asus-authentication-bypass
- [other] https://www.asus.com/us/supportonly/lyra%20mini/helpdesk_bios/
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-32030

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.