CVE-2026-4526Global ZCL command parser missing minimum-length validation in EmberZNet v9.0.2

Description

In EmberZNet v9.0.2 and earlier, malformed global ZCL messages can trigger out-of-bounds reads in framework parsing logic and terminate the process. These messages must come from a device that has already joined the network, and no information leakage back to the sender was observed.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/069Vm00000pEGPQIA4?operationCo… vendor-advisorypermissions-requiredPermissions Required
• https://github.com/SiliconLabsSoftware/sisdk-release/ patchNot Applicable