CVE-2025-14055 PUBLISHED

Integer underflow in Secure NCP host

Assigner: Silabs
Reserved: 04.12.2025 Published: 20.02.2026 Updated: 20.02.2026

An integer underflow vulnerability in Silicon Labs Secure NCP host implementation allows a buffer overread via a specially crafted packet.

CVSS Vector: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
CVSS Score: 2.4

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Physical	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	Low	Integrity	None
Attack Requirements	None	Availability	Low	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Vendor	silabs.com
Product	Simplicity SDK
Versions	Default: unaffected affected from 0 to 2025.12.1 (incl.)