Silicon Labs Z-Wave Protocol Controller Integer underflow vulnerability leads to out of bounds read

published 2026-01-05 10 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-0838

cvss: 5.3; version 4.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 19%
public exploits: 0; none known

An integer underflow vulnerability in the Silicon Labs Z-Wave Protocol Controller can lead to out of bounds memory reads.

Patch / fix

fixed in 1

silabs.com Z-Wave Protocol Controller 1.7.1

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 10 mo ago (2026-01-05)

Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	4.0	5.3	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
CNA	4.0	5.3	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/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

silabs.com Z-Wave Protocol Controller

Classification

Weakness

CWE-125 Out-of-bounds Read
CWE-191 Integer Underflow (Wrap or Wraparound)
CWE-1284 Improper Validation of Specified Quantity in Input

References

community.silabs.com /068Vm00000a4nNI
vendor-advisory, permissions-required

Sources

CVE List CVE-2025-10933
NVD CVE-2025-10933

Fencer Vulns 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.

Summary