{"id":"CVE-2026-66281","title":"Authenticated Denial-of-Service in Zigbee Discover Attributes Handling","summary":"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 suppor…","severity":"medium","cvss":6,"cvssVector":"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","cvssSource":"cna","cwe":["CWE-835"],"vendor":"Silicon Labs","product":"EmberZNet","affected":["EmberZNet <= 9.1.1"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-23T10:49:05.345959Z"},"published":"2026-10-22","updated":"2026-10-23","sourceUpdated":"2026-10-23T10:56:10.091Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-66281","references":[{"url":"https://github.com/SiliconLabsSoftware/docs-security-advisories/blob/main/Advisories/500-599/A-00000590.md"}],"tags":["cve.org"],"ingestedAt":"2026-10-22T22:00:50.269Z","slug":"CVE-2026-66281","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `EmberZNet <= 9.1.1`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":33,"depthScoreParts":{"impact":33,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}