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    CVE-1999-1228

    Various modems that do not implement a guard time, or are configured with a guard time of 0, can allow remote attackers to execute arbitrary modem commands such as ATH, ATH0, etc., via a "+++" sequence that appears in ICMP packets, the subject of an e-mail message, IRC commands, and others.

    Published:Sep 27, 1998
    Last Modified:Apr 16, 2026
    EPS:Sep 12, 2001
    EPSS Score:0.00742
    CVSS Score:7.5

    Affected Products

    Vendor
    Diamond
    Product
    Supra
    Vendor
    Logicode
    Product
    Quicktel
    Vendor
    Us Robotics
    Product
    Us Robotics

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    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