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    CVE-2016-9920

    steps/mail/sendmail.inc in Roundcube before 1.1.7 and 1.2.x before 1.2.3, when no SMTP server is configured and the sendmail program is enabled, does not properly restrict the use of custom envelope-from addresses on the sendmail command line, which allows remote authenticated users to execute arbitrary code via a modified HTTP request that sends a crafted e-mail message.

    Published:Dec 8, 2016
    Last Modified:Apr 12, 2025
    EPS:Dec 8, 2016
    EPSS Score:0.44834
    CVSS Score:7.5

    Affected Products

    Vendor
    Roundcube
    Product
    Webmail

    Exploits

    https://blog.ripstech.com/2016/roundcube-command-execution-via-email/https://blog.ripstech.com/2016/roundcube-command-execution-via-email/https://github.com/t0kx/exploit-CVE-2016-9920

    Common Weakness Enumeration

    CWE-284 Improper Access Control

    Related CVEs

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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