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    CVE-2016-4817

    lib/http2/connection.c in H2O before 1.7.3 and 2.x before 2.0.0-beta5 mishandles HTTP/2 disconnection, which allows remote attackers to cause a denial of service (use-after-free and application crash) or possibly execute arbitrary code via a crafted packet.

    Published:Jun 19, 2016
    Last Modified:Apr 12, 2025
    EPS:Jun 19, 2016
    EPSS Score:0.07964
    CVSS Score:7.5

    Affected Products

    Vendor
    Dena
    Product
    H2o

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    CVE-2021-43848 (CVSS 7.4) — h2o is an open source http server. In code prior to the `8c0eca3` commit h2o may attempt to access uninitializ…
    CVE-2018-0608 (CVSS 9.8) — Buffer overflow in H2O version 2.2.4 and earlier allows remote attackers to execute arbitrary code or cause a …
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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