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    CVE-2021-47793

    Telegram Desktop 2.9.2 contains a denial of service vulnerability that allows attackers to crash the application by sending an oversized message payload. Attackers can generate a 9 million byte buffer and paste it into the messaging interface to trigger an application crash.

    Published:Jan 15, 2026
    Last Modified:Mar 5, 2026
    EPS:Jan 15, 2026
    EPSS Score:0.00017
    CVSS Score:7.5

    Affected Products

    Vendor
    Telegram
    Product
    Telegram
    Vendor
    Telegram
    Product
    Telegram Desktop
    Vendor
    Telegram Desktop
    Product
    Telegram Desktop

    Exploits

    https://www.exploit-db.com/exploits/50247https://www.exploit-db.com/exploits/50247

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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