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    CVE-2021-38492

    When delegating navigations to the operating system, Firefox would accept the `mk` scheme which might allow attackers to launch pages and execute scripts in Internet Explorer in unprivileged mode. *This bug only affects Firefox for Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox < 92, Thunderbird < 91.1, Thunderbird < 78.14, Firefox ESR < 78.14, and Firefox ESR < 91.1.

    Published:Sep 7, 2021
    Last Modified:Nov 21, 2024
    EPS:Nov 3, 2021
    EPSS Score:0.00438
    CVSS Score:6.5

    Affected Products

    Vendor
    Microsoft
    Product
    Windows
    Vendor
    Mozilla
    Product
    Firefox
    Vendor
    Mozilla
    Product
    Firefox Esr
    Vendor
    Mozilla
    Product
    Thunderbird

    Exploits

    https://bugzilla.mozilla.org/show_bug.cgi?id=1721107https://bugzilla.mozilla.org/show_bug.cgi?id=1721107

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    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