CVE-2025-3461 ON Semiconductor Quantenna Telnet Missing Authentication

Critical 9.1 Published 8 Jun 2025 Updated 9 Jun 2025

Attackers can access the unauthenticated Telnet interface on Quantenna Wi-Fi chips to execute arbitrary commands and gain full control.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-3461?

CVE-2025-3461 is a critical missing authorization vulnerability in ON Semiconductor Quantenna Wi-Fi chipset, published on 8 Jun 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-306

Which versions are affected by CVE-2025-3461?

It affects 18 products.

Products include Onsemi Qcs-Ax2-A12 Firmware, Onsemi Qcs-Ax2-S5 Firmware, Onsemi Qcs-Ax2-T12 Firmware, Onsemi Qcs-Ax2-T8 Firmware, Onsemi Qcs-Ax3-A12 Firmware, Onsemi Qcs-Ax3-S5 Firmware and 12 more.

How do I fix CVE-2025-3461?

No fix has been published for CVE-2025-3461 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2025-3461 being exploited?

There is no known exploitation of CVE-2025-3461 in the wild and no public exploit code.

Sources

Also known as GHSA-f5vv-5ch7-632x.