{"id":"CVE-2026-66279","title":"Dis-connect vulnerability in Connect Stack","summary":"In Connect SDK 4.3.1 and earlier and Flex SDK 3.7.7 and earlier, a message with invalid security settings may bypass authentication resulting in network disruption. This vulnerability does not allow an attacker to gain the Network Key or…","severity":"high","cvss":7.2,"cvssVector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","cvssSource":"cna","cwe":["CWE-940"],"vendor":"Silicon Labs","product":"Connect SDK","affected":["connect_sdk >= 4.0.0 <= 4.3.1","connect_sdk <= 3.7.7"],"published":"2026-10-22","updated":"2026-10-22","sourceUpdated":"2026-10-22T16:01:08.434Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-66279","references":[{"url":"https://github.com/SiliconLabsSoftware/docs-security-advisories/blob/main/Advisories/500-599/A-00000588.md"},{"url":"https://github.com/SiliconLabsSoftware/sisdk-release/"}],"tags":["cve.org"],"ingestedAt":"2026-10-22T22:00:50.342Z","slug":"CVE-2026-66279","body":"## Overview\n\nIn Connect SDK 4.3.1 and earlier and Flex SDK 3.7.7 and earlier, a message with invalid security settings may bypass authentication resulting in network disruption. This vulnerability does not allow an attacker to gain the Network Key or otherwise break confidentiality.\n\n## Affected\n\n- `connect_sdk >= 4.0.0 <= 4.3.1`\n- `connect_sdk <= 3.7.7`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":40,"depthScoreParts":{"impact":39.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}