CVE-2026-85649

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    CVE-2026-85649

    Published: 4 Sept 2026Last Modified: 10 Sept 2026

    Summary:

    Details: (Holloway) Chew, Kean Ho's Actualizer v1.2.0 and earlier contains a fail-open password validation vulnerability in the Alpha user and root user password loops of Shell/debian-minbase-install.sh. The installer invokes mkpasswd to generate yescrypt password hashes but does not check the command's return value and unconditionally accepts the result. If mkpasswd fails to generate a yescrypt hash, for example because an incompatible mkpasswd implementation or an environment without yescrypt support is used, the resulting password hash variable can be empty and the build proceeds. The resulting image can therefore contain empty password fields for the root and alpha accounts, potentially permitting passwordless authentication depending on the authentication configuration.

    References: https://github.com/ChewKeanHo/software-actualizer/blob/v1.2.0/Shell/debian-minbase-install.sh#L788, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/85xxx/CVE-2026-85649.json, https://nvd.nist.gov/vuln/detail/CVE-2026-85649, https://github.com/ChewKeanHo/software-actualizer/commit/50a0932ac705635d9af62955c353e7c6df003a61.patch, https://github.com/ChewKeanHo/software-actualizer/releases/tag/v1.2.1, https://doi.org/10.5281/zenodo.22169659

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -50a0932ac705635d9af62955c353e7c6df003a61

    Affected versions

    v1.2.0

    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-2026-85649 | CVE-DB