CVE-2026-66279

UNKNOWN 0.0

Dis-connect vulnerability in Connect Stack

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-940
Vendor	silicon labs
Product	connect sdk
Published	Oct 22, 2026

Stay Ahead of the Next One

Get instant alerts for silicon labs connect sdk

Be the first to know when new unknown vulnerabilities affecting silicon labs connect sdk are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

Affected Versions

Silicon Labs / Connect SDK

4.0.0 ≤ 4.3.1 0 ≤ 3.7.7

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/SiliconLabsSoftware/docs-security-advisories/blob/main/Advisories/500-599/A-00000588.md github.com: https://github.com/SiliconLabsSoftware/sisdk-release/