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

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CRITICAL

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

Published Apr 11, 2026

9.8

CRITICAL

CVSS 3.1

EPSS 1.10%

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

Vendor Sonos Product Era 300 Default
n/a
- Version
  17.5 (build 91.0-70070)
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Sonos

Era 300

n/a

Version	Status	Constraints
17.5 (build 91.0-70070)	affected	-

Remediation

No remediation recorded yet.

Weaknesses (1)

CWE-119

Buffer Overflow

References (2)

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-21627
Advisory
https://www.zerodayinitiative.com/advisories/ZDI-26-192/
x_research-advisoryThird Party Advisory

Link	Providers	Tags
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-21627		Advisory
https://www.zerodayinitiative.com/advisories/ZDI-26-192/		x_research-advisoryThird Party Advisory