CVE-2021-32030
CRITICAL KEV NUCLEIASUS GT-AC2900 & Lyra Mini <3.0.0.4.386.42643/<3.0.0.4.384.46630 - Auth Bypass via Null Byte
Title source: llmExploitation Summary
CVE-2021-32030 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added June 2, 2025. A Nuclei detection template is also available.
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.
Nuclei Templates (1)
References (5)
Scores
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H