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    CVE-2021-42142

    An issue was discovered in Contiki-NG tinyDTLS through master branch 53a0d97. DTLS servers mishandle the early use of a large epoch number. This vulnerability allows remote attackers to cause a denial of service and false-positive packet drops.

    Published:Jan 23, 2024
    Last Modified:Jun 11, 2025
    EPS:Jan 23, 2024
    EPSS Score:0.01056
    CVSS Score:8.2

    Affected Products

    Vendor
    Contiki-ng
    Product
    Tinydtls

    Exploits

    No exploit reference

    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