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Status published
Critical
CVE-2021-3329
DOS: Incorrect handling of the initial HCI ACL_MTU handshake packet leads to crash of bluetooth host layer
Vulnerability Description
Lack of proper validation in HCI Host stack initialization can cause a crash of the bluetooth stack
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
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Affected Vendor
zephyrproject-rtos
View all reports →Affected Software
zephyr
Vulnerable Versions:
unspecified
Timeline
Official Publish:
February 26th, 2023
Last Modified:
March 11th, 2025
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H
Weaknesses (CWE)
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.