---
id: CVE-2025-12890
title: >-
  Improper handling of  malformed Connection Request with the interval set to be
  1 (which supposed to be illegal) and the chM 0x7CFFFFFFFF triggers a crash
summary: >-
  Improper handling of  malformed Connection Request with the interval set to be
  1 (which supposed to be illegal) and the chM 0x7CFFFFFFFF triggers a crash.
  The peripheral will not be connectable after it.
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-703
published: '2025-11-07'
updated: '2026-10-07'
sourceUpdated: '2026-10-07T21:10:00.200'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-12890'
references:
  - url: >-
      https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-8hrf-pfww-83v9
    label: vulnerabilities@zephyrproject.org
tags:
  - nvd
  - exploit-available
epss: 0.00187
epssPercentile: 0.07598
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/gduma-phData/patch-CVE-2025-12890'
  checkedAt: '2026-10-07T21:54:50.414Z'
exploitAvailable: true
ingestedAt: '2026-10-07T21:54:14.980Z'
---

## Overview

Improper handling of  malformed Connection Request with the interval set to be 1 (which supposed to be illegal) and the chM 0x7CFFFFFFFF triggers a crash. The peripheral will not be connectable after it.

## Remediation

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