Infinite Loop Vulnerability in EmberZNet by Silicon Labs
CVE-2026-66281

6MEDIUM

Key Information:

Vendor

Silicon Labs

Status
Emberznet
Vendor
CVE Published:
22 October 2026

What is CVE-2026-66281?

In versions of EmberZNet prior to 9.1.1, a vulnerability exists that can lead to an infinite loop when a malformed Discover Attributes command is received from devices that have previously joined the network. This issue primarily affects devices that support manufacturer-specific clusters, resulting in degraded performance and potential denial of service scenarios on the network.

Affected Version(s)

EmberZNet 0 <= 9.1.1

References

https://github.com/SiliconLabsSoftware/docs-security-advi...
vendor-advisory

CVSS V4

Score:
6
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Junming C. (@Chapoly1305) and Prof. Qiang Zeng of George Mason University
.