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    CVE-2023-5632

    In Eclipse Mosquito before and including 2.0.5, establishing a connection to the mosquitto server without sending data causes the EPOLLOUT event to be added, which results excessive CPU consumption. This could be used by a malicious actor to perform denial of service type attack. This issue is fixed in 2.0.6

    Published:Oct 18, 2023
    Last Modified:Jun 25, 2025
    EPS:Oct 18, 2023
    EPSS Score:0.00091
    CVSS Score:7.5

    Affected Products

    Vendor
    Eclipse
    Product
    Mosquitto

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-834 Excessive Iteration

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2021-34434 (CVSS 5.3) — In Eclipse Mosquitto versions 2.0 to 2.0.11, when using the dynamic security plugin, if the ability for a clie…
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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