by Kastro
Paper/Archive/CVE-2026-4149

CVE-2026-4149

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

EPSS 1.0%CVSS 10.0
critical.is priorityof 100
43
CVSS 10.0 (CNA)10.0 / 10 × 3030.0Not in CISA KEV+300.0EPSS percentile 62.6.626 × 2012.5No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
Era 30017.5 (build 91.0-70070)–CNA

Scores by source

zdi (CNA)10.0CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refzerodayinitiative.com/advisories/ZDI-26-192