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    CVE-2020-8515

    DrayTek Vigor2960 1.3.1_Beta, Vigor3900 1.4.4_Beta, and Vigor300B 1.3.3_Beta, 1.4.2.1_Beta, and 1.4.4_Beta devices allow remote code execution as root (without authentication) via shell metacharacters to the cgi-bin/mainfunction.cgi URI. This issue has been fixed in Vigor3900/2960/300B v1.5.1.

    Published:Feb 1, 2020
    Last Modified:Nov 7, 2025
    EPS:Feb 1, 2020
    EPSS Score:0.94357
    CVSS Score:9.8

    CISA Notification

    Description

    DrayTek Vigor2960 1.3.1_Beta, Vigor3900 1.4.4_Beta, and Vigor300B 1.3.3_Beta, 1.4.2.1_Beta, and 1.4.4_Beta devices allow remote code execution as root (without authentication) via shell metacharacters to the cgi-bin/mainfunction.cgi URI. This issue has been fixed in Vigor3900/2960/300B v1.5.1.

    Required Action:

    Apply updates per vendor instructions.

    Notes:

    No extra notes provided.

    Due Date
    May 3, 2022
    1592 days ago
    Alert Date
    Nov 3, 2021
    1773 days ago

    Affected Products

    Vendor
    Draytek
    Product
    Vigor2960
    Vendor
    Draytek
    Product
    Vigor2960 Firmware
    Vendor
    Draytek
    Product
    Vigor300b
    Vendor
    Draytek
    Product
    Vigor300b Firmware
    Vendor
    Draytek
    Product
    Vigor3900
    Vendor
    Draytek
    Product
    Vigor3900 Firmware

    Exploits

    http://packetstormsecurity.com/files/156979/DrayTek-Vigor2960-Vigor3900-Vigor300B-Remote-Command-Execution.htmlhttp://packetstormsecurity.com/files/156979/DrayTek-Vigor2960-Vigor3900-Vigor300B-Remote-Command-Execution.htmlhttps://www.exploit-db.com/exploits/48268https://github.com/darrenmartyn/CVE-2020-8515https://github.com/imjdl/CVE-2020-8515-PoChttps://github.com/truerandom/nmap_draytek_rce

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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