CVE-2025-1048
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 · uneditedSonos Era 300 Speaker libsmb2 Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Sonos Era 300 speakers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of SMB data. 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 the anacapa user. Was ZDI-CAN-25535.
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 confidenceA use-after-free vulnerability in libsmb2 library on Sonos Era 300 speakers allows network-adjacent attackers to achieve unauthenticated RCE by exploiting improper object lifecycle management during SMB data processing. The flaw lacks validation of object existence before operations, enabling memory corruption and code execution as the anacapa user.
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< 57.22-61162< 83.1-61240CVSS 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:3.0/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 checksWork through these to decide whether this CVE applies to you.
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Confirm Sonos device modelIdentify if the device is a Sonos Era 300 speaker through physical inspection, Sonos app, or network discoveryAffected if Device is a Sonos Era 300 speaker
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Check installed firmware versionOpen Sonos app, go to Settings > System > About my system and locate the firmware version; compare against vulnerable versions: S1 < 57.22-61162, S2 < 83.1-61240Affected if Firmware version is below 57.22-61162 (S1) or below 83.1-61240 (S2)
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Determine if SMB functionality is activeCheck Sonos app settings for SMB sharing or external storage configuration; the libsmb2 library is only engaged when SMB data processing is enabledAffected if SMB sharing or external storage with SMB is configured and active
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Assess network accessibilityVerify if the Sonos device is reachable by unauthenticated network-adjacent attackers on the local network segmentAffected if Device is on an unrestricted network segment allowing unauthenticated network-adjacent access
Environment is affected if it is a Sonos Era 300 running vulnerable firmware (S1 < 57.22-61162 or S2 < 83.1-61240) with SMB functionality enabled and accessible to unauthenticated network-adjacent attackers.
Generated from the published advisory. Verify against your own configuration.
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 · scoped57.22-6116283.1-61240
Apply Sonos firmware updates when available; until then, isolate Sonos devices on restricted network segments to limit attack surface from unauthenticated network-adjacent attackers.
S1: 57.22-61162 or higher | S2: 83.1-61240 or higher
- 1. Open the Sonos app on your mobile device or computer
- 2. Navigate to Settings > System > System Updates
- 3. Check for available updates for your Sonos Era 300 speaker
- 4. If an update is available, select and install the update
- 5. After installation, verify the firmware version has been updated to S1: 57.22-61162 or higher, or S2: 83.1-61240 or higher
- 6. Confirm the speaker is functioning normally after the update
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation8.0 h
- Implementation4.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-1048 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-1048 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- 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