CVE-2021-32030

9.8 CRITICAL 99% exploit odds Drop everything exploited in the wild No fix listed Auth & access Network gear

What it is

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.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.
In the wild: CISA lists this as exploited in real attacks. Treat as urgent.
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2021-05-05 00:00 UTC ReservedThe CVE id was reserved by its CNA
2021-05-06 15:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2025-06-02 Exploited in the wildAdded to CISA's Known Exploited Vulnerabilities list
2025-06-23 Remediation deadlineCISA's due date for federal agencies to fix it
2026-06-17 03:52 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: yes, CISA lists it. This puts it above everything that is not.
Exploit odds: 99.4% in the next 30 days (EPSS).
Severity: 9.8 CRITICAL (CVSS).
Fix: none linked yet, which raises it.
It meets the bar for Drop everything: critical, and exploited or very likely to be.

Details

Published: 2021-05-06 15:15 UTC
Last modified: 2026-06-17 03:52 UTC
Added to CISA KEV: 2025-06-02
Exploit probability: 99.4% · EPSS, next 30 days
Weakness: CWE-287 · Improper authentication
Record status: Analyzed

Affected

Asus Lyra Mini Firmware < 3.0.0.4.384.46630
Asus gt-ac2900 Firmware < 3.0.0.4.386.42643

Attack profile CVSS 3.1 · 9.8

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

Raw vector

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

Is it in your code?

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References

NVD record · CVE.org record