---
id: CVE-2025-10456
title: >-
  A vulnerability was identified in the handling of Bluetooth Low Energy (BLE)
  fixed channels (such as SMP or ATT)
summary: >-
  A vulnerability was identified in the handling of Bluetooth Low Energy (BLE)
  fixed channels (such as SMP or ATT). Specifically, an attacker could exploit a
  flaw that causes the BLE target (i.e., the device under attack) to attempt to
  dis…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H'
cwe:
  - CWE-190
vendor: zephyrproject
product: zephyr
affected:
  - zephyr <= 4.1.0
published: '2025-09-19'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T20:16:57.673'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-10456'
references:
  - url: >-
      https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-hcc8-3qr7-c9m8
    label: vulnerabilities@zephyrproject.org
tags:
  - nvd
epss: 0.00209
epssPercentile: 0.1034
ingestedAt: '2026-10-13T20:53:44.532Z'
---

## Overview

A vulnerability was identified in the handling of Bluetooth Low Energy (BLE) fixed channels (such as SMP or ATT). Specifically, an attacker could exploit a flaw that causes the BLE target (i.e., the device under attack) to attempt to disconnect a fixed channel, which is not allowed per the Bluetooth specification. This leads to undefined behavior, including potential assertion failures, crashes, or memory corruption, depending on the BLE stack implementation.

## Affected

- `zephyr <= 4.1.0`

## Remediation

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