# CVE-2026-47149: Silicon Labs EmberZNet out-of-bounds read in Door Lock cluster

Source: https://junglewise.ai/threats/cve-2026-47149-silicon-labs-emberznet-out-of-bounds-read-in-door-lock-cluster  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-25. Updated: 2026-06-25  
License: CC BY 4.0 with a link back

CVE-2026-47149 · Severity: info · CVSS 7.1 · Published 2026-06-25

Silicon Labs EmberZNet, a software stack used for Zigbee networking in smart home and industrial devices, contains a flaw in how it handles door lock commands. An authorized device on the network can send a specially crafted message that causes the receiving device to crash. This results in a denial-of-service, potentially rendering smart locks or connected controllers unresponsive until they are restarted.

Technologies: [Silicon Labs EmberZNet](https://junglewise.ai/threats/technologies/emberznet). Vendors: [Silicon Labs](https://junglewise.ai/threats/vendors/silicon-labs).

## Quick answers

**Is CVE-2026-47149 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-47149 being exploited in the wild.

**How severe is CVE-2026-47149?** Informational severity, with a CVSS score of 7.1, published 25 June 2026.

**Which products and versions are affected?** Silicon Labs EmberZNet v9.0.2 and earlier.

**Is there a fix for CVE-2026-47149?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-47149 attacked?** It is attacked over the network, in device firmware.

**Am I affected by CVE-2026-47149?** Check whether you run Silicon Labs EmberZNet at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

An out-of-bounds read vulnerability (CWE-125) exists in Silicon Labs EmberZNet versions v9.0.2 and earlier within the Door Lock cluster implementation. The flaw is triggered when the stack processes malformed or out-of-range Door Lock user identifiers. An attacker must already be a member of the Zigbee network (authenticated) to send the malicious message. Successful exploitation results in a process termination (denial-of-service), though no information leakage or data exfiltration has been observed. The vulnerability specifically impacts devices supporting the Door Lock cluster.

## Affected products

- Silicon Labs EmberZNet v9.0.2 and earlier

## Timeline

- 2026-06-25: disclosed
- 2026-06-25: advisory

## References

- [https://github.com/SiliconLabsSoftware/sisdk-release/](https://github.com/SiliconLabsSoftware/sisdk-release/)
- [https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/069Vm00000pEGPQIA4?operationContext=S1](https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/069Vm00000pEGPQIA4?operationContext=S1)

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