Vulnerability · Published Oct 22, 2026 · Assigned by Silabs
CVE-2026-89410Out-of-bounds read in Z-Wave NCP SPI Handler
Medium 5.1
In plain English
A medium-severity security flaw in Z-Wave SDK from Silicon Labs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities).
Severity (CVSS 4.0)5.1Medium
Exploit odds (30 days)0.2%top 92.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
In Z-Wave SDK 8.1.1 and earlier, a malformed NCP SPI command can trigger out-of-bounds reads that leak sensitive information.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Silicon Labs | Z-Wave SDK | 0 – through 8.1.1 |
Weakness: CWE-1285 · Vector: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N