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Improper Access ControlWeakness · CWE-284

CVE-2026-37100

MEDIUM · 6.5 CVSS v3.1 Published 2026-04-16
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
70/100
Remediation priority · Elevated
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
An issue in the Bluetooth Low Energy (BLE) control interface of the Yamaha SR-B30A sound bar firmware 2.40 (Mobile App: Sound Bar Remote / version: 2.40) allows remote attackers within BLE radio range to connect without authentication via the Sound Bar Remote protocol

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

The Yamaha SR-B30A sound bar firmware 2.40 contains a flaw in its Bluetooth Low Energy (BLE) control interface. Remote attackers within BLE radio range can connect to the device without authentication via the Sound Bar Remote protocol, potentially allowing unauthorized control of the device.

MitigationApply the vendor-supplied firmware patch when available; until then, disable BLE functionality on the device if not required, or limit physical access to the device's BLE range.

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
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

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

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 model
    Locate the model number on the device label or check the device documentation/system settings to confirm it is a Yamaha SR-B30A sound bar
    Affected if The device is a Yamaha SR-B30A model
  2. Check the installed firmware version
    Access the device settings menu, system information, or use the Sound Bar Remote app to view the current firmware version
    Affected if The firmware version is 2.40
  3. Verify BLE is enabled
    Check the device settings or Sound Bar Remote app for Bluetooth Low Energy / BLE control functionality status
    Affected if BLE control interface is turned ON in the device settings
  4. Confirm BLE pairing is not secured
    Attempt to connect to the device via BLE using a BLE scanner tool (such as nRF Connect or similar) from a device within radio range - observe whether the connection succeeds without requiring authentication or pairing credentials
    Affected if A BLE connection to the device can be established without authentication or PIN/bonding requirement

A user is affected if they own a Yamaha SR-B30A running firmware 2.40 with the BLE control interface enabled, as an unauthenticated attacker within BLE range can connect without credentials.

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.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply the vendor-supplied firmware patch when available; until then, disable BLE functionality on the device if not required, or limit physical access to the device's BLE range.

Have this fixed Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing2.0 h
  • Review / QA1.0 h
7.0 hours of engineering $1,240
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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-2026-37100 in production — separate from our analysis above.

No notes yet

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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
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data