dbcve.org
Missing AuthenticationWeakness · CWE-306

CVE-2026-32296

HIGH · 8.2 CVSS v3.1 Published 2026-03-17
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
91/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Sipeed NanoKVM before 2.3.1 exposes a Wi-Fi configuration endpoint without proper security checks, allowing an unauthenticated attacker with network access to change the saved configured Wi-Fi network to one of the attacker's choosing, or craft a request to exhaust the system memory and terminate the KVM process.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

Sipeed NanoKVM versions before 2.3.1 have a Wi-Fi configuration endpoint that lacks proper authentication and security validation. An unauthenticated attacker with network access can either modify the saved Wi-Fi network credentials to an attacker-controlled network or send crafted requests that exhaust system memory, causing the KVM process to terminate.

MitigationUpgrade to Sipeed NanoKVM version 2.3.1 or later which includes proper authentication for the Wi-Fi configuration endpoint. If immediate patching is not possible, implement network segmentation to restrict access to the management interface.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify the device firmware version
    Access the device's web interface or check the system information page to view the installed firmware version. If using SSH or serial console, run the command to display firmware version (commonly 'uname -a', 'cat /etc/version', or similar).
    Affected if The displayed firmware version is earlier than 2.3.1
  2. Verify Wi-Fi functionality is enabled
    Check the device configuration or network settings to confirm whether the Wi-Fi adapter and its management interface are currently active. Look for Wi-Fi status in the web UI or run commands to list wireless interfaces (such as 'iwconfig' or 'ip link show').
    Affected if Wi-Fi is enabled and the device is running a firmware version before 2.3.1
  3. Confirm the Wi-Fi configuration API is accessible
    Attempt to access the Wi-Fi configuration API endpoint without authentication. From a local network, try sending an HTTP request to the device's IP address on common API paths for Wi-Fi settings (for example, GET or POST requests to endpoints like '/api/wifi', '/cgi-bin/wifi', or similar).
    Affected if The API responds without requiring authentication and the firmware is below 2.3.1
  4. Inspect Wi-Fi network configuration for anomalies
    Review the current saved Wi-Fi networks in the device settings. Check for unknown or suspicious SSIDs, unexpected credential changes, or configurations pointing to unexpected access points.
    Affected if Unexpected or unknown Wi-Fi networks are configured and the firmware version is before 2.3.1

The environment is affected if the Sipeed NanoKVM device is running firmware version 2.3.0 or earlier and has Wi-Fi functionality enabled, as this exposes the unauthenticated Wi-Fi configuration API endpoint.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Upgrade to Sipeed NanoKVM version 2.3.1 or later which includes proper authentication for the Wi-Fi configuration endpoint. If immediate patching is not possible, implement network segmentation to restrict access to the management interface.

Recommended fix High confidence

Sipeed NanoKVM firmware version 2.3.1 or later

  1. 1. Identify the current version of Sipeed NanoKVM software running on the device
  2. 2. Access the device management interface or check the firmware version through the appropriate method (e.g., web UI, CLI, or system information)
  3. 3. If the current version is before 2.3.1, download the version 2.3.1 or later firmware update from the official Sipeed repository or support channel
  4. 4. Follow the standard firmware update procedure provided in the Sipeed NanoKVM documentation to apply the upgrade
  5. 5. After upgrading, verify that the Wi-Fi configuration endpoint now requires proper authentication
  6. 6. Confirm the new version is 2.3.1 or higher by checking the device system information
Caveat Review release notes for version 2.3.1 to check for any configuration or feature changes that may affect existing setup

Generated from the published advisory — verify against the referenced sources before acting.

Have this fixed Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA1.0 h
10.0 hours of engineering $1,750
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-32296 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
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  • No spam, self-promotion, credentials, or personal data