CVE-2025-1051: Sonos Era 300 · Heap-based Buffer Overflow
Affects Sonos Era 300Source CVE Database V5
Not known to be exploited · CVSS 8.8 High.
Data as of 26 Oct 2026, 10:12 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 31% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 2 Jun 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Sonos Era 300 | Affected
| Fixed in– |
AI-suggested
European organizations should immediately inventory their Sonos Era 300 devices and verify firmware versions. Since no patches are currently linked, organizations should implement network-level mitigations such as isolating Sonos devices on segmented VLANs with strict access controls to limit network adjacency to trusted users and systems only. Employ network monitoring to detect anomalous traffic patterns to/from these devices. Disable or restrict ALAC streaming if possible until a patch is available. Coordinate with Sonos for timely updates and apply patches as soon as they are released. Additionally, enforce strong network segmentation between IoT devices and critical enterprise infrastructure, and consider deploying intrusion detection/prevention systems (IDS/IPS) tuned to detect exploitation attempts targeting this vulnerability. Regularly update device firmware and maintain an asset management program to track IoT device security posture.
Description
Sonos Era 300 Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected Sonos Era 300 speakers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of ALAC data. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the anacapa user. Was ZDI-CAN-25865.