TI-2026-79283 Aliases CVE-2026-89410 GHSA-39xw-g2p8-jwq5

Out-of-bounds read in Z-Wave NCP SPI Handler

LOW 22CWE-1285Published 2026-10-22 · Updated 2026-10-23

Key facts

Attack vector: Physical
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: —
Confidentiality · integrity · availability: High · None · None
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

Silicon Labs Z-Wave SDK versions 8.1.1 and earlier are affected. A malformed NCP SPI command triggers out-of-bounds reads (CWE-1285) that can leak sensitive information. The CVSS 4.0 vector (AV:P) indicates an attacker with physical access, no privileges and no user interaction can read the leaked data.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

In Z-Wave SDK 8.1.1 and earlier, a malformed NCP SPI command can trigger out-of-bounds reads that leak sensitive information.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00183 7th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
silabs.com	Z-Wave SDK	up to 8.1.1	—	No fix listed	CNA

Z-Wave SDK Vendorsilabs.com Affected up to 8.1.1 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Z-Wave SDK.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

2026-10-22 Threatist record created from CVE-2026-89410
2026-10-22 Alias added: GHSA-39xw-g2p8-jwq5
2026-10-23 CISA SSVC decision points changed

References

Advisory 1

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

TI-2023-24288 Heap-based buffer overflow in silabs.com Gecko Platform CVSS 3.1CRITICAL 10.0
TI-2023-14952 Memory corruption in silabs.com Gecko Platform CVSS 3.1CRITICAL 9.8
TI-2023-12925 Memory corruption in silabs.com Gecko Platform CVSS 3.1CRITICAL 9.8
TI-2023-12476 Heap-based buffer overflow in silabs.com Gecko Platform CVSS 3.1CRITICAL 9.8
TI-2022-08744 Heap-based buffer overflow in MicriumOS HTTP Server allows potential remote code execution CVSS 3.1CRITICAL 9.8
TI-2023-12937 Memory corruption in silabs.com Gecko Platform CVSS 3.1CRITICAL 9.8

See all 178 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences