CVE-2026-66279

Dis-connect vulnerability in Connect Stack

Published Oct 22, 2026 CVSS 4.0 · 7.2 High EPSS < 1% KEV · Not listed
Description
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 otherwise break confidentiality.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Silabs
Silabs connect Sdk
Vendors & Products Silabs
Silabs connect Sdk
Type Values Removed Values Added
Description 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 otherwise break confidentiality.
Title Dis-connect vulnerability in Connect Stack
Weaknesses CWE-940
References
Metrics cvssV4_0

{'score': 7.2, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Silabs
Published
Updated
Oct 23, 2026, 10:56 AM
Reserved
Jul 24, 2026, 1:33 PM
Status
Awaiting Analysis
Published
Oct 22, 2026, 2:17 PM
Modified
Oct 23, 2026, 12:18 PM