CVE-2026-4149 Sonos Era 300 SMB Response Out-Of-Bounds Access Remote Code Execution Vulnerability
Remote attackers can execute arbitrary code in kernel context via out-of-bounds access in SMB response handling without authentication.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-4149?
CVE-2026-4149 is a critical memory corruption vulnerability in Sonos Era 300, published on 11 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Weakness: CWE-119
Which versions are affected by CVE-2026-4149?
It affects 1 product.
Products include Sonos Era 300 Firmware.
How do I fix CVE-2026-4149?
No fix has been published for CVE-2026-4149 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-4149 being exploited?
There is no known exploitation of CVE-2026-4149 in the wild and no public exploit code.
Other vulnerabilities in Sonos Era 300
Sources
Also known as GHSA-8v6v-j22p-w63g.