Backblaze

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    Products: 3
    Vulnerabilities: 5
    Known Exploited: 0
    0
    Critical Level Threats
    2
    High Level Threats
    2
    Medium Level Threats
    0
    Low Level Threats

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    Vulnerabilities

    CVE-2026-19820

    Backblaze Client for Windows Improper Link Resolution Vulnerability

    Last Modified: Sep 02, 2026
    Published: Sep 01, 2026

    CVE-2022-23653

    B2 Command Line Tool TOCTOU application key disclosure

    Last Modified: Apr 23, 2025
    Published: Feb 23, 2022

    CVE-2022-23651

    b2-sdk-python TOCTOU application key disclosure

    Last Modified: Apr 23, 2025
    Published: Feb 23, 2022

    CVE-2020-8290

    Backblaze for Windows and Backblaze for macOS before 7.0.0.439 suffer from improper privilege management in `bztransmit` helper due to lack of permission handling and validation before creation of client update directories allowing for local escalation of privilege via rogue client update binary.

    Last Modified: Nov 21, 2024
    Published: Dec 27, 2020

    CVE-2020-8289

    Backblaze for Windows before 7.0.1.433 and Backblaze for macOS before 7.0.1.434 suffer from improper certificate validation in `bztransmit` helper due to hardcoded whitelist of strings in URLs where validation is disabled leading to possible remote code execution via client update functionality.

    Last Modified: Nov 21, 2024
    Published: Dec 27, 2020
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    Backblaze Vulnerabilities & Security CVEs | CVE-DB