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    CVE-2026-44709

    pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.8.7, pamusb-pinentry reads the PINENTRY_FALLBACK_APP environment variable and executes it directly without any validation. Any process that can set environment variables before pamusb-pinentry is invoked can point PINENTRY_FALLBACK_APP at an arbitrary binary or script and have it executed with the privileges of the pam_usb tool chain. This vulnerability is fixed in 0.8.7.

    Published:May 27, 2026
    Last Modified:Jun 2, 2026
    EPS:May 27, 2026
    EPSS Score:0.00023
    CVSS Score:7.8

    Affected Products

    Vendor
    Mcdope
    Product
    Pam Usb

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-48980 (CVSS 6.3) — pam_usb provides hardware authentication for Linux using removable media. In versions prior to 0.9.2, getenv(…
    CVE-2026-48983 (CVSS 5.8) — pam_usb provides hardware authentication for Linux using ordinary removable media. In versions prior to 0.9.2,…
    CVE-2026-48982 (CVSS 5.8) — pam_usb provides hardware authentication for Linux using ordinary removable media. In versions prior to 0.9.2,…
    CVE-2026-48981 (CVSS 6.7) — pam_usb provides hardware authentication for Linux using ordinary removable media. In versions prior to 0.9.2,…
    CVE-2026-48985 (CVSS 5.5) — pam_usb provides hardware authentication for Linux using ordinary removable media. In versions 0.9.1 and below…
    CVE-2026-48986 (CVSS 4.7) — pam_usb provides hardware authentication for Linux using removable media. In pam_usb 0.9.1 and earlier, usb_ge…
    CVE-2026-48984 (CVSS 4.7) — pam_usb provides hardware authentication for Linux using ordinary removable media. In versions 0.9.1 and below…
    CVE-2026-44712 (CVSS 8.2) — pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.8.7, a crafted U…
    CVE-2026-44710 (CVSS 4.6) — pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.8.7, src/device.…
    CVE-2026-44711 (CVSS 7.9) — pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.8.7, symlink att…

    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