CVE-2021-40829

    Dashboard / Vulnerabilities / CVE-2021-40829

    CVE-2021-40829

    Published: 23 Nov 2021Last Modified: 9 Jul 2026

    Summary:

    Details: Connections initialized by the AWS IoT Device SDK v2 for Java (versions prior to 1.4.2), Python (versions prior to 1.6.1), C++ (versions prior to 1.12.7) and Node.js (versions prior to 1.5.3) did not verify server certificate hostname during TLS handshake when overriding Certificate Authorities (CA) in their trust stores on MacOS. This issue has been addressed in aws-c-io submodule versions 0.10.5 onward. This issue affects: Amazon Web Services AWS IoT Device SDK v2 for Java versions prior to 1.4.2 on macOS. Amazon Web Services AWS IoT Device SDK v2 for Python versions prior to 1.6.1 on macOS. Amazon Web Services AWS IoT Device SDK v2 for C++ versions prior to 1.12.7 on macOS. Amazon Web Services AWS IoT Device SDK v2 for Node.js versions prior to 1.5.3 on macOS. Amazon Web Services AWS-C-IO 0.10.4 on macOS.

    References: https://github.com/awslabs/aws-c-io/, https://github.com/aws/aws-iot-device-sdk-cpp-v2, https://github.com/aws/aws-iot-device-sdk-java-v2, https://github.com/aws/aws-iot-device-sdk-js-v2, https://github.com/aws/aws-iot-device-sdk-python-v2

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -0e97b7b9f6b4e6084f937e7629c564101a6703a1

    Affected versions

    v1.12.6
    v1.12.5
    v1.12.4
    v1.12.3
    v1.12.2
    v1.12.1
    v1.12.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2021-40829 | CVE-DB