CVE-2026-47147

HIGH

OTA server raw parser missing per-field bounds validation in EmberZNet v9.0.2

Title source: cna

Description

In EmberZNet v9.0.2 and earlier, malformed OTA requests can drive the OTA server parser into out-of-bounds reads. A limited amount of data from RAM is read back to the requester. The size and location of this data is limited. These requests must come from a device that has already joined the network. Only devices supporting the OTA Server cluster may be impacted.

References (2)

Core 2

Core References

Vendor Advisory vendor-advisory permissions-required

https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/069Vm00000pEGPQIA4?operationContext=S1

Patch patch

https://github.com/SiliconLabsSoftware/sisdk-release/

Scores

CVSS v3 7.1

EPSS 0.0023

EPSS Percentile 14.0%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-125

Status published

Products (2)

silabs/emberznet < 9.0.2

Silicon Labs/EmberZNet < 9.0.2

Published Jun 25, 2026

Tracked Since Jun 25, 2026