CVE-2021-3329
DOS: Incorrect handling of the initial HCI ACL_MTU handshake packet leads to crash of bluetooth host layer
Severity Score
6.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
1
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
Track
*SSVC
Descriptions
Lack of proper validation in HCI Host stack initialization can cause a crash of the bluetooth stack
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:Track
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2021-01-27 CVE Reserved
- 2023-02-26 CVE Published
- 2025-03-11 CVE Updated
- 2025-03-11 First Exploit
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-665: Improper Initialization
- CWE-703: Improper Check or Handling of Exceptional Conditions
CAPEC
References (1)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|---|---|
| https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-117 | 2025-03-11 |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Zephyrproject Search vendor "Zephyrproject" | Zephyr Search vendor "Zephyrproject" for product "Zephyr" | 2.4.0 Search vendor "Zephyrproject" for product "Zephyr" and version "2.4.0" | - |
Affected
| ||||||
| Zephyrproject Search vendor "Zephyrproject" | Zephyr Search vendor "Zephyrproject" for product "Zephyr" | 2.4.0 Search vendor "Zephyrproject" for product "Zephyr" and version "2.4.0" | rc1 |
Affected
| ||||||
| Zephyrproject Search vendor "Zephyrproject" | Zephyr Search vendor "Zephyrproject" for product "Zephyr" | 2.4.0 Search vendor "Zephyrproject" for product "Zephyr" and version "2.4.0" | rc2 |
Affected
| ||||||
| Zephyrproject Search vendor "Zephyrproject" | Zephyr Search vendor "Zephyrproject" for product "Zephyr" | 2.4.0 Search vendor "Zephyrproject" for product "Zephyr" and version "2.4.0" | rc3 |
Affected
| ||||||