CVE-2026-77684: zephyr 4.2.0 through 4.4.2

CVE-2026-77684. CVSS 3.1 base score 5.7 (MEDIUM, Vendor/CNA).

Affected technology

zephyr · 4.2.0 through 4.4.2
zephyrproject

Component: Not specified by the source
Function: hfp_hf_create, hfp_hf_disconnected, hfp_hf_send_cmd, also
File: subsys/bluetooth/host/classic/hfp_hf.c

Attack conditions (Vendor/CNA, CVSS 3.1): Adjacent network · Low privileges required · No user interaction required

What an attacker can do

Vendor/CNA’s CVSS 3.1 assessment (base score 5.7/10) rates confidentiality and integrity impact as none; availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 20-Oct-2026 01:47 UTC

CWE: CWE-401
CCR priority: 22.8 /100 (P4)
CVSS 3.1: 5.7 /10 · CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H · Vendor/CNA
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-20 01:44:01.123206+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-77684.html