---
id: CVE-2026-15418
title: CP210x Memory Leakage
summary: >-
  In the silabser.sys driver for CP210x devices v11.5.0 and earlier, a local
  unprivileged user with a malicious device can use malformed packets to leak up
  to 145 bytes of uninitialized kernel pool memory. This vulnerability affects
  Window…
severity: low
cvss: 2.4
cvssVector: 'CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'
cvssSource: cna
cwe:
  - CWE-130
vendor: Silicon Labs
product: silabser.sys driver
affected:
  - silabser.sys_driver <= 11.5.0
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-10T18:21:15.355138Z'
published: '2026-09-10'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T18:21:20.938Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-15418'
references:
  - url: >-
      https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/069Vm0000100HA6IAM?operationContext=S1
tags:
  - cve.org
epss: 0.00154
epssPercentile: 0.04972
ingestedAt: '2026-09-11T16:45:48.028Z'
---

## Overview

In the silabser.sys driver for CP210x devices v11.5.0 and earlier, a local unprivileged user with a malicious device can use malformed packets to leak up to 145 bytes of uninitialized kernel pool memory. This vulnerability affects Windows 10 and earlier.

## Affected

- `silabser.sys_driver <= 11.5.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.