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CVE-2025-3461

Onsemi Qcs-ax2-a12 Firmware authentication bypass

9.1 CRITICALPublic exploitEPSS 0.55%
  1. Published8 Jun 2025

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

Onsemi Qcs-ax2-a12 Firmwareall versions
Onsemi Qcs-ax2-s5 Firmwareall versions
Onsemi Qcs-ax2-t12 Firmwareall versions
Onsemi Qcs-ax2-t8 Firmwareall versions
Onsemi Qcs-ax3-a12 Firmwareall versions
Onsemi Qcs-ax3-s5 Firmwareall versions
Onsemi Qcs-ax3-t12 Firmwareall versions
Onsemi Qcs-ax3-t8 Firmwareall versions
Onsemi Qd840 Firmwareall versions
Onsemi Qhs710 Firmwareall versions
Onsemi Qsr10ga Firmwareall versions
Onsemi Qsr10gu Firmwareall versions
Onsemi Qv840c Firmwareall versions
Onsemi Qv840 Firmwareall versions
Onsemi Qv860 Firmwareall versions
Onsemi Qv940 Firmwareall versions
Onsemi Qv942c Firmwareall versions
Onsemi Qv952c Firmwareall versions

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2025-3461 being actively exploited?

CVE-2025-3461 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.55%.

How severe is CVE-2025-3461?

CVE-2025-3461 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 0.55% probability of exploitation.

Which products are affected by CVE-2025-3461?

Affected 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, and 13 more.

How do I fix CVE-2025-3461?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-3461 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.