CVE-2026-4149

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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "17.5 (build 91.0-70070)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Era 300", "source": "cna", "vendor": "Sonos"}, "product": "era_300", "vendor": "sonos"}], "analysis": {"en": {"generated_at": "2026-04-15T22:31:35.912849+00:00", "value": {"mitigation_remediation": ["Apply the latest Sonos firmware update or patch for the Era\u202f300 device to fix the DataOffset validation bug (CWE\u2011119).", "If a patch is not yet available, isolate the device from untrusted networks and block or restrict SMB traffic to prevent remote exploitation.", "Disable SMB services on the device if configuration permits or place the device on a separate, air\u2011gap network segment to reduce exposure.", "Monitor network logs for anomalous SMB connections and other suspicious activity that may indicate attempts to exploit the vulnerability."], "summary": {"action": "Immediate Patch", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "All Sonos Era\u202f300 smart speakers run on firmware that processes SMB responses. The vulnerability exists in any current firmware version from the product\u2019s launch until a vendor patch is applied; no specific firmware range is published.", "description_and_impact": "The flaw stems from improper validation of the DataOffset field within SMB responses, allowing an out\u2011of\u2011bounds memory read that can be abused to execute arbitrary code in kernel mode. Authentication is not required, so a remote attacker can trigger the vulnerability by sending crafted SMB packets, gaining remote code execution with elevated privileges and potentially compromising the device and any connected systems.", "risk_and_exploitability": "With a CVSS base score of 9.8 the flaw is considered critical. The EPSS score is 1\u202f%\u2014a low yet nonzero chance of exploitation. The vulnerability is not listed in the CISA KEV catalogue. Attackers can exploit it via network SMB traffic without authentication, delivering malicious payloads that execute in kernel space. This gives an attacker full control over the device. The weakness is identified as CWE\u2011119\u2014Out\u2011of\u2011Bounds Write."}}}}, "created": "2026-04-13T12:42:26.325873+00:00", "updated": "2026-04-15T22:45:16.430527+00:00", "vendors": ["sonos", "sonos$PRODUCT$era_300"]}