---
title: "CVE-2026-18413: NXP MCUX LPADC - Buffer Overflow"
description: "NXP MCUX LPADC driver in Zephyr OS does not check buffer size in adc_sequence, causing buffer overflow when writing samples, letting unprivileged user-mode threads cause kernel memory corruption, exploit requires user-mode access to LPADC device."
url: https://panop.io/threat-heartbeat/CVE-2026-18413/
---

# CVE-2026-18413 NXP MCUX LPADC - Buffer Overflow

NXP MCUX LPADC driver in Zephyr OS does not check buffer size in adc\_sequence, causing buffer overflow when writing samples, letting unprivileged user-mode threads cause kernel memory corruption, exploit requires user-mode access to LPADC device.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.12% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-18413)

## Details

Type

Buffer Overflow

Impact

Privilege Escalation, Denial Of Service

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Published

28 September 2026

Updated

15 October 2026

Weakness

[CWE-787](https://cwe.mitre.org/data/definitions/787.html)

## Vendor fix

Update to a version including adc\_sequence\_validate\_buffer() check in mcux\_lpadc\_start\_read() or latest Zephyr OS version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-18413](https://nvd.nist.gov/vuln/detail/CVE-2026-18413)
- [https://github.com/zephyrproject-rtos/zephyr/commit/3bda971a52ddbbec28f6fcfe3b006d34e8b9e5a9](https://github.com/zephyrproject-rtos/zephyr/commit/3bda971a52ddbbec28f6fcfe3b006d34e8b9e5a9)
- [https://github.com/zephyrproject-rtos/zephyr/commit/9338c518bf2b6a396f166d4dbe9985ce7e44379c](https://github.com/zephyrproject-rtos/zephyr/commit/9338c518bf2b6a396f166d4dbe9985ce7e44379c)
- [https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-7jqq-2g5q-hcrp](https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-7jqq-2g5q-hcrp)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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