CVE-2026-47148
Description
In EmberZNet v9.0.2 and earlier, malformed GetGroupMembership commands can trigger repeated reads past the end of the message payload 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. Only devices supporting the Groups cluster may be impacted.
Summary dbcve.org
In EmberZNet v9.0.2 and earlier, the Groups cluster implementation contains a buffer over-read vulnerability where malformed GetGroupMembership commands cause repeated reads past the end of the message payload, leading to process termination. The attacker requires a pre-authenticated device already joined to the Zigbee network to send these malicious commands.
Mitigation
Update EmberZNet to a patched version once available from Silicon Labs. Network segmentation and restricting joining of untrusted devices can reduce attack surface until the update is deployed.