Integer Underflow Vulnerability in Silicon Labs Secure NCP Host Implementation
CVE-2025-14055

2.4LOW

Key Information:

Vendor

Silabs.com

Status
Simplicity Sdk
Vendor
CVE Published:
20 February 2026

What is CVE-2025-14055?

An integer underflow vulnerability has been identified in the Secure NCP host implementation by Silicon Labs. This flaw enables a buffer overread condition when handling specially crafted packets. Attackers can exploit this vulnerability to potentially gain access to sensitive data or cause system instability.

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Affected Version(s)

Simplicity SDK 0 <= 2025.12.1

References

https://community.silabs.com/068Vm00000gvJlq
vendor-advisorypermissions-required

CVSS V4

Score:
2.4
Severity:
LOW
Confidentiality:
None
Integrity:
Low
Availability:
Low
Attack Vector:
Physical
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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