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CVE-2026-66279

Dis-connect vulnerability in Connect Stack

HIGH
7.2
CVSS Score
Published: October 22, 2026 at 01:41 PM UTC
Updated: October 23, 2026 at 12:18 PM UTC
1 product affected across 1 vendorConnect SDK

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Severity
HIGH7.2
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Vendor AdvisoryPermissions Required
Source: cverecord
https://github.com/SiliconLabsSoftware/docs-security-advisories/blob/main/Advisories/500-599/A-00000588.md
Patch
Source: cverecord
https://github.com/SiliconLabsSoftware/sisdk-release/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.2HIGHSilabs
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-940

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