CVE-2026-89409

Unvalidated ZWAVE_CMD_NODES_EXIST May Cause Deletion of End Nodes

State: Published
Severity: 5.3 Medium
Published: Oct 22, 2026
Updated: Oct 22, 2026
Reserved: Sep 11, 2026

Description

In Z-Wave SDK 8.1.1 and earlier (for 700/800 series devices) and 6.85.02 and earlier (for 500 series devices), missing checks in the ZWAVE_CMD_NODES_EXIST handler can result in nodes being removed from the network. These messages must come from a device that has already joined the network.

Scores

CVSS	Score	Vector	Source
4.0	5.3 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N	Silabs

Weaknesses

CWE-940 Improper Verification of Source of a Communication Channel

Affected Products

Product	Versions
Z-Wave SDKSilicon Labs	7.0.0 through 8.1.1Affected 6.85.02 and earlierAffected

References

https://github.com/SiliconLabsSoftware/docs-security-advisories/blob/main/Advisories/500-599/A-00000591.mdvendor-advisory

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