CVE-2021-30481

    Dashboard / Vulnerabilities / CVE-2021-30481

    CVE-2021-30481

    Published: 10 Apr 2021Last Modified: 10 Mar 2026

    Summary:

    Details: Valve Steam before 2021-04-17, when a Source engine game is installed, allows remote authenticated users to execute arbitrary code because of a buffer overflow that occurs for a Steam invite after one click.

    References: , https://twitter.com/floesen_/status/1337107178096881666, https://news.ycombinator.com/item?id=26762170, https://twitter.com/the_secret_club/status/1380868759129296900, https://www.youtube.com/watch?v=rNQn--9xR1Q

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    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-2021-30481 | CVE-DB