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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.006 (44.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.006 · change: +0.000
Affected products
Weakness classification (CWE)
References
- takeonme.org/cves/cve-2025-3461/ (Exploit, Third Party Advisory, third-party-advisory)
- community.onsemi.com/s/article/QCS-Quantenna-Wi-Fi-product-support-and-security… (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.