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Fencer Intel
medium 5.1

CVE-2026-89410 json

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

published 20d ago modified 19d ago also EUVD-2026-108187

cvss
5.1
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 7%
public exploits
0
none known

Summary

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

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
19d ago

Exploit prediction

0.18% chance of exploitation in the next 30 days, higher than 7% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CNA 4.0 5.1 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
CNA 4.0 5.1 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

  • Silicon Labs Z-Wave SDK

Classification

Weakness
  • CWE-1285 Improper Validation of Specified Index, Position, or Offset in Input

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.