CVE-2021-3966 CRITICAL

CVE-2021-3966: Usb bluetooth device ACL read cb buffer overflow

Vendor Zephyrproject-Rtos
Product zephyr
Weakness CWE-122
Published January 11, 2023
Last update April 9, 2025
View on NVD All CVEs

CVSS base score

9.6/10
Attack vector Adjacent
Attack complexity Low
Privileges required None
User interaction None
Confidentiality Low
Integrity High

CVSS vector

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

What the vulnerability does

01Description

usb device bluetooth class includes a buffer overflow related to implementation of net_buf_add_mem.

Key dates

02Disclosure timeline

January 11, 2023 CVE published
April 9, 2025 Record updated