What is CVE-2025-3461?

CVE-2025-3461 is a critical-severity vulnerability in Onsemi Qcs-Ax2-A12, classified under Missing Authentication for Critical Function. CVSS score: 9.1/10. Published 2025-06-08.

How severe is CVE-2025-3461?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Auth bypass in Onsemi Qcs-Ax2-A12

CVE-2025-3461

The Quantenna Wi-Fi chips ship with an unauthenticated telnet interface by default. This is an instance of CWE-306, "Missing Authentication for Critical Function," and is estimated as a CVSS 9.1 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N). This issue affects Quantenna Wi-Fi chipset through version 8.0.0.28 of the latest SDK, and appears to be unpatched at the time of this CVE record's first publishing, though the vendor has released a best practices guide for implementors of this chipset.

Vulnerability class: Broken Authentication

EPSS: 0.005 (40.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

cve@takeonme.org (Exploit, Third Party Advisory, third-party-advisory)
cve@takeonme.org (vendor-advisory, Release Notes)

Frequently asked questions

What is CVE-2025-3461?: CVE-2025-3461 is a critical-severity vulnerability in Onsemi Qcs-Ax2-A12, classified under Missing Authentication for Critical Function. CVSS score: 9.1/10. Published 2025-06-08.
How severe is CVE-2025-3461?: Critical severity. CVSS v3 base score is 9.1 out of 10.