CVE-2025-3461Public exploitNetwork attack vector

Unauthenticated root access via passwordless Telnet

Published Jun 8, 2025 · Updated Jun 9, 2025

Missing authentication in Quantenna Wi-Fi chipsets through 8.0.0.28 allows remote attackers to obtain root access over Telnet. The Telnet login accepts the root username without requesting a password, and the service is enabled by default. Reachability requires an end product that leaves Telnet enabled or exposes unauthenticated qcsapi RPC methods that start it; successful access permits command execution and control of the chipset.

CVSS severity9.1
Critical
EPSS probability0.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in Quantenna Wi-Fi chipsets through 8.0.0.28 allows remote attackers to obtain root access over Telnet. The Telnet login accepts the root username without requesting a password, and the service is enabled by default. Reachability requires an end product that leaves Telnet enabled or exposes unauthenticated qcsapi RPC methods that start it; successful access permits command execution and control of the chipset.

The record

CVE
CVE-2025-3461
Published
Jun 8, 2025
Updated
Jun 9, 2025
Vendor
onsemi
Product
Quantenna Wi-Fi chipsets
Classifications
CWE-306, T1021
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 8, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 9, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=8.0.0.28

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

onsemi · Quantenna Wi-Fi chipsetsversion=0 <=8.0.0.28

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.1Austin Hackers AnonymousCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1021Remote Services

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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