Advisory Details

March 16th, 2026

Sonos Era 300 SMB Response Out-Of-Bounds Access Remote Code Execution Vulnerability

CVE ID	CVE-2026-4149
CVSS SCORE	10.0, AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
AFFECTED VENDORS	Sonos
AFFECTED PRODUCTS	Era 300
VULNERABILITY DETAILS	This vulnerability allows remote attackers to execute arbitrary code on affected installations of Sonos Era 300. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of the DataOffset field within SMB responses. The issue results from the lack of proper validation of user-supplied data, which can result in a memory access past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the kernel.
ADDITIONAL DETAILS	Fixed in version 83.1-61240 https://support.sonos.com/en-ca/article/release-notes-sonos-system-updates
DISCLOSURE TIMELINE	2025-11-06 - Vulnerability reported to vendor 2026-03-16 - Coordinated public release of advisory 2026-03-16 - Advisory Updated
CREDIT	dmdung (@_piers2) of STAR Labs SG Pte. Ltd

BACK TO ADVISORIES