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    2 vulnerabilities found for Backblaze Client by Backblaze

    CVE-2026-19820 (GCVE-0-2026-19820)

    Vulnerability from nvd – Published: 2026-09-01 00:13 – Updated: 2026-09-01 15:14
    VLAI
    Title
    Backblaze Client for Windows Improper Link Resolution Vulnerability
    Summary
    A vulnerability in the Backblaze Client allows a local user to make the system not bootable by creating a link from Backblaze's folder to Windows OS system files during a backup. Successful exploitation requires an administrator-level system change that results in the absence of specific Windows OS security controls. This vulnerability is due to improper link resolution.
    Severity
    5.8 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:L/SA:L
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-01 15:13 UTC
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    Backblaze Backblaze Client Affected: 10.0.0.1029 (custom)
    Affected: 10.0.1.10307 (custom)
    Affected: 10.0.2.1047 (custom)
    		Create a notification for this product.
    Credits
    TrendAI Zero Day Initiative hamdi
    Show details on NVD website
    To clipboard 

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    CVE-2026-19820 (GCVE-0-2026-19820)

    Vulnerability from cvelistv5 – Published: 2026-09-01 00:13 – Updated: 2026-09-01 15:14
    VLAI
    Title
    Backblaze Client for Windows Improper Link Resolution Vulnerability
    Summary
    A vulnerability in the Backblaze Client allows a local user to make the system not bootable by creating a link from Backblaze's folder to Windows OS system files during a backup. Successful exploitation requires an administrator-level system change that results in the absence of specific Windows OS security controls. This vulnerability is due to improper link resolution.
    Severity
    5.8 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:L/SA:L
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-01 15:13 UTC
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    Backblaze Backblaze Client Affected: 10.0.0.1029 (custom)
    Affected: 10.0.1.10307 (custom)
    Affected: 10.0.2.1047 (custom)
    		Create a notification for this product.
    Credits
    TrendAI Zero Day Initiative hamdi
    Show details on NVD website
    To clipboard 

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