Answer in brief
CVE-2026-89409 records a Medium severity (CVSS 5.3) vulnerability in Unvalidated ZWAVE_CMD_NODES_EXIST May Cause Deletion of End Nodes. The current sources do not mark it as known exploited. The current feed maps Silicon Labs/Z-Wave SDK (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Silicon Labs/Z-Wave SDK (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Silicon Labs/Z-Wave SDKgeneric | >=7.0.0 <=8.1.1 || >=0 <=6.85.02 | Not reported |
Published upstream
Oct 22, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 22, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 22, 2026
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.
Quoted source text, attributed separately from HOL analysis.