dbcve.org
Era 100 FirmwareOperating system · Sonos

CVE-2024-5269

HIGH · 8.8 CVSS v3.1 Published 2024-06-06
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
93/100
Remediation priority · Urgent
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
Sonos Era 100 SMB2 Message Handling Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Sonos Era 100 smart speakers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of SMB2 messages. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-22459.

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 · high confidence

A use-after-free vulnerability in the SMB2 message handling subsystem of Sonos Era 100 smart speakers allows network-adjacent attackers to execute arbitrary code as root without authentication. The flaw stems from the lack of object existence validation before performing operations on it, leading to memory corruption that can be exploited for remote code execution.

MitigationApply the vendor-supplied firmware update when available; until then, network segment the device to limit exposure to adjacent attackers and disable SMB services if not required.

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

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Era 100 FirmwareOperating system
Affected:= 15.9

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
High
Integrity
High
Availability
High

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/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 Sonos Era 100 device
    Access the Sonos app settings or device documentation to confirm the model is Era 100
    Affected if Device is not a Sonos Era 100 (different models are not affected by this specific CVE)
  2. Check installed firmware version
    In the Sonos app, go to Settings > System > About My System to view the firmware version
    Affected if Firmware version is exactly 15.9 (this is the only affected version)
  3. Verify SMB service is enabled
    Check the device network settings or SMB configuration to determine if SMB services are active
    Affected if SMB services are enabled - the vulnerability exists in the SMB2 message handling subsystem
  4. Assess network accessibility
    Review network configuration to determine if the device is accessible to network-adjacent attackers
    Affected if Device is accessible from network segments where untrusted attackers could reach it

A Sonos Era 100 with firmware version 15.9 that has SMB enabled and is network-accessible to adjacent attackers is affected by this vulnerability.

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

Apply the vendor-supplied firmware update when available; until then, network segment the device to limit exposure to adjacent attackers and disable SMB services if not required.

Recommended fix Moderate confidence

Any firmware version newer than 15.9 (contact Sonos support for the exact fixed release)

  1. Locate the Sonos Era 100 device in the Sonos app
  2. Navigate to Settings > System > System Updates
  3. Check for and install any available firmware updates
  4. Alternatively, ensure automatic updates are enabled in the device settings
  5. After updating, verify the firmware version has progressed beyond 15.9
  6. Confirm the update was successful by checking the current firmware version in the device settings

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

Fix this in Era 100 Firmware Scoped from the published advisory
  • Consultation3.0 h
  • Implementation2.0 h
  • Testing2.0 h
  • Review / QA2.0 h
9.0 hours of engineering $1,620
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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-2024-5269 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