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    CVE-2026-116541

    Netty netty-tcnative before 2.0.84.Final contains a denial of service vulnerability in the tcn_write_to_bytebuffer BIO write callback that overreports bytes consumed. Remote TLS 1.3 peers can provoke queued post-handshake records like NewSessionTicket or KeyUpdate to truncate flights, fail connections, or abort the JVM process.

    Published:Oct 26, 2026
    Last Modified:Oct 26, 2026
    EPS:Oct 26, 2026
    EPSS Score:
    CVSS Score:5.9

    Affected Products

    Vendor
    Netty
    Product
    Netty-tcnative
    Vendor
    Netty
    Product
    Netty-tcnative-boringssl-static

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-682 Incorrect Calculation

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-128 Integer Attacks
    CAPEC-129 Pointer Manipulation

    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