CVE-2021-32030

CRITICAL9.8

CISA KEV

Published 2021-05-06 · Updated 2026-06-17 · Source cve@mitre.org

Summary

CVE-2021-32030 is a critical-severity (CVSS 9.8) vulnerability in ASUS Routers. CISA added it to the Known Exploited Vulnerabilities catalog on June 2, 2025, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by June 23, 2025. CISA does not currently list it as used in ransomware campaigns. ASUS has 3 vulnerabilities in the KEV catalog, 0 of them linked to ransomware.

All 3 known-exploited ASUS vulnerabilities →

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.

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE-287CWE-287

CISA Known-Exploited Vulnerability

Product: ASUS — Routers

Name: ASUS Routers Improper Authentication Vulnerability

Date added: 2025-06-02 · Due: 2025-06-23

Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

References

View on NVD

More exploited ASUS vulnerabilities

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added 2025-12-17
CVE-2023-39780
RT-AX55 Routers — ASUS RT-AX55 Routers OS Command Injection Vulnerability
added 2025-06-02

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