Vulnerability · Published Apr 11, 2026 · Assigned by zdi

CVE-2026-4149Sonos Era 300 SMB Response Out-Of-Bounds Access Remote Code Execution Vulnerability

Critical 10.0

In plain English

A critical-severity memory corruption in Era 300 from Sonos. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 63% of all known vulnerabilities).

Severity (CVSS 3.0)10.0Critical

Exploit odds (30 days)1.0%top 37.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Sonos Era 300 SMB Response Out-Of-Bounds Access Remote Code Execution Vulnerability. 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. Was ZDI-CAN-28345.

Affected products (as reported)

Vendor	Product	Versions
Sonos	Era 300	17.5 (build 91.0-70070)

Weakness: CWE-119 · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

References

ZDI-26-192 x_research-advisory