All vulnerabilities
CVE-2026-66281

EmberZNet: Authenticated Denial-of-Service in Zigbee Discover Attributes Handling

Silicon Labs EmberZNet
Open in ThreatlineRecord JSON
CVSS
6.0Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.22%Chance of exploitation activity in the next 30 days, higher than 11% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published22 Oct 2026Updated 23 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Description

In EmberZNet 9.1.1 and earlier, a malformed Discover Attributes command can result in a loop with unreachable exit condition (infinite loop). These messages must come from a device that has already joined the network. Only devices supporting manufacturer-specific clusters are impacted.

Text from CVE List

Affected versions 1

  • EmberZNetaffected: all versions through 9.1.1CVE List

References 1