Back to Database
Status published
Medium
CVE-2021-3433
BT: Invalid channel map in CONNECT_IND results to Deadlock
Vulnerability Description
Invalid channel map in CONNECT_IND results to Deadlock. Zephyr versions >= v2.5.0 Improper Check or Handling of Exceptional Conditions (CWE-703). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-3c2f-w4v6-qxrp
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-3433
Credits & Attribution
No credits recorded in the NVD database.
More from zephyrproject-rtos
View All →CVE-2025-9558
Bluetooth: Mesh: Out-of-Bound Write in gen_prov_start
High
7.6
CVE-2025-9557
Bluetooth: Mesh: Out-of-Bound Write in gen_prov_cont
High
7.6
CVE-2025-9408
Userspace privilege escalation vulnerability on Cortex M
High
8.2
CVE-2025-7403
Bluetooth: bt_conn_tx_processor unsafe handling
High
7.6
CVE-2025-2962
Infinite loop in dns_copy_qname
High
8.2
Affected Vendor
zephyrproject-rtos
View all reports →Affected Software
zephyr
Vulnerable Versions:
v2.5.0
Timeline
Official Publish:
June 28th, 2022
Last Modified:
September 16th, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weaknesses (CWE)
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.