What’s Vulnerable › Vulnerabilities

CVE-2026-89410: Out-of-bounds read in Z-Wave NCP SPI Handler

• Severity: medium (CVSS 5.1 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-22 · updated 2026-10-23
• Weakness: CWE-1285

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

• Silicon Labs Z-Wave SDK: through 8.1.1

References

• https://github.com/SiliconLabsSoftware/docs-security-advisories/blob/main/Advisories/500-599/A-00000592.md

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