CVE-2026-89409

Unvalidated ZWAVE_CMD_NODES_EXIST May Cause Deletion of End Nodes​

Published Oct 22, 2026 CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Silabs
Silabs z-wave Sdk
Vendors & Products Silabs
Silabs z-wave Sdk
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Unvalidated ZWAVE_CMD_NODES_EXIST May Cause Deletion of End Nodes​
Weaknesses CWE-940
References
Metrics cvssV4_0

{'score': 5.3, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Silabs
Published
Updated
Oct 22, 2026, 7:00 PM
Reserved
Sep 11, 2026, 4:26 PM
Status
Awaiting Analysis
Published
Oct 22, 2026, 2:17 PM
Modified
Oct 22, 2026, 7:18 PM