All vulnerabilities
CVE-2026-66279

Dis-connect vulnerability in Connect Stack

Silicon Labs Connect SDK
Open in ThreatlineRecord JSON
CVSS
7.2High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.24%Chance of exploitation activity in the next 30 days, higher than 14% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published22 Oct 2026Updated 23 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

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.

Text from CVE List

Affected versions 2

  • Connect SDKaffected: 4.0.0 through 4.3.1CVE List
  • Connect SDKaffected: all versions through 3.7.7CVE List

References 2