CVE-2026-66279
Dis-connect vulnerability in Connect Stack
- State
- Published
- Severity
- 7.2 High
- Published
- Oct 22, 2026
- Updated
- Oct 23, 2026
- Reserved
- Jul 24, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.2 High | 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 | Silabs |
Weaknesses
- CWE-940 Improper Verification of Source of a Communication Channel
Affected Products
| Product | Versions |
|---|---|
Connect SDKSilicon Labs |
|
References
- https://github.com/SiliconLabsSoftware/docs-security-advisories/blob/main/Advisories/500-599/A-00000588.mdvendor-advisorypermissions-required
- https://github.com/SiliconLabsSoftware/sisdk-release/patch
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