CVE-2026-94502 Silicon Labs CVE debrief

Who should care

Defenders responsible for Zigbee networks, particularly those using EmberZNet, should assess exposure and prioritize verification and updates. This includes reviewing network configurations, monitoring for suspicious activity, and verifying and updating affected EmberZNet versions. Additionally, defenders should consider compensating controls for exposed systems while remediation is scheduled and verified.

Why it matters

Defenders should prioritize verifying and updating affected EmberZNet versions, assessing network configurations, and monitoring for suspicious activity due to the potential for remote code execution.

• Remote code execution is possible due to the out-of-bounds write vulnerability
• Devices supporting the Price Cluster are impacted
• Network configurations may need to be updated to restrict access

Technical summary

The vulnerability occurs in EmberZNet versions 9.1.1 and earlier, allowing an out-of-bounds write due to a malformed Publish Price Matrix command. This issue affects devices that support the Price Cluster and have joined the network. The vulnerability can be exploited by a device that has already joined the network, and defenders should assess exposure and prioritize verification and updates. The CVE record and Silicon Labs advisory provide details on the vulnerability, but additional information on exploitation or impact is limited.

Defensive priority

Defenders should prioritize verifying and updating affected EmberZNet versions, assessing network configurations, and monitoring for suspicious activity.

Recommended defensive actions

• Verify and update EmberZNet versions to the latest supported version
• Assess network configurations to restrict access to Price Cluster devices
• Monitor for suspicious activity related to Publish Price Matrix commands
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and Silicon Labs advisory provide details on the vulnerability. However, additional information on exploitation or impact is limited. Defenders should verify and update affected EmberZNet versions, assess network configurations, and monitor for suspicious activity. The source item and vendor advisory provide additional context on the vulnerability.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.