Medium 6.0Published Oct 22, 2026

CVE-2026-66281Authenticated Denial-of-Service in Zigbee Discover Attributes Handling

Updated under an hour ago (Oct 28, 2026, 4:30 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for Silicon Labs EmberZNet

Exploited in the last 30 days

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.

CVSS: 6.0 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Weakness (CWE): CWE-835
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Silabs
NVD analysis: Undergoing Analysis
Record last updated: Oct 23, 2026
First seen by InfoSec Signals: Oct 22, 2026

Affected products

Affected products

Silicon Labs EmberZNet silicon_labs:emberznet (from the name)	through 9.1.1	CNA record

References

References

https://github.com/SiliconLabsSoftware/docs-security-advisories/blob/main/Advisories/500-599/A-00000590.md	vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.