CVE-2025-14055: CWE-191 Integer Underflow (Wrap or Wraparound) in silabs.com Simplicity SDK, Gecko SDK
An integer underflow vulnerability in Silicon Labs Secure NCP host implementation allows a buffer overread via a specially crafted packet.
AI Analysis
Technical Summary
An integer underflow (CWE-191) in Silicon Labs Secure NCP host implementation in Simplicity SDK and Gecko SDK allows a buffer overread (CWE-125) via a specially crafted packet. This vulnerability could lead to reading memory beyond the intended buffer boundaries. The CVSS 4.0 score is 2.4 (low), with attack vector being physical (AV:P), low attack complexity, no privileges or user interaction required, and low impact on integrity and availability. No patch or vendor advisory is currently available, and no known exploits exist in the wild.
Potential Impact
The vulnerability could allow an attacker with physical access to send a specially crafted packet that triggers an integer underflow, resulting in a buffer overread. This may lead to information disclosure or application instability. However, the low CVSS score and lack of known exploits suggest limited practical impact.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should limit physical access to affected devices and monitor for updates from Silicon Labs regarding patches or mitigations.
CVE-2025-14055: CWE-191 Integer Underflow (Wrap or Wraparound) in silabs.com Simplicity SDK, Gecko SDK
Description
An integer underflow vulnerability in Silicon Labs Secure NCP host implementation allows a buffer overread via a specially crafted packet.
CVSS v4.0
Score 2.4low
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
An integer underflow (CWE-191) in Silicon Labs Secure NCP host implementation in Simplicity SDK and Gecko SDK allows a buffer overread (CWE-125) via a specially crafted packet. This vulnerability could lead to reading memory beyond the intended buffer boundaries. The CVSS 4.0 score is 2.4 (low), with attack vector being physical (AV:P), low attack complexity, no privileges or user interaction required, and low impact on integrity and availability. No patch or vendor advisory is currently available, and no known exploits exist in the wild.
Potential Impact
The vulnerability could allow an attacker with physical access to send a specially crafted packet that triggers an integer underflow, resulting in a buffer overread. This may lead to information disclosure or application instability. However, the low CVSS score and lack of known exploits suggest limited practical impact.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should limit physical access to affected devices and monitor for updates from Silicon Labs regarding patches or mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Silabs
- Date Reserved
- 2025-12-04T17:50:34.480Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 69987a5a2c4d84f260a3d5a2
Added to database: 2/20/2026, 3:14:34 PM
Last enriched: 4/24/2026, 11:04:59 PM
Last updated: 6/9/2026, 9:19:03 AM
Views: 186
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