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    CVE-2025-15536

    A weakness has been identified in BYVoid OpenCC up to 1.1.9. This vulnerability affects the function opencc::MaxMatchSegmentation of the file src/MaxMatchSegmentation.cpp. This manipulation causes heap-based buffer overflow. The attack is restricted to local execution. The exploit has been made available to the public and could be used for attacks. Patch name: 345c9a50ab07018f1b4439776bad78a0d40778ec. To fix this issue, it is recommended to deploy a patch.

    Published:Jan 18, 2026
    Last Modified:Feb 23, 2026
    EPS:Jan 18, 2026
    EPSS Score:0.00041
    CVSS Score:5.3

    Affected Products

    Vendor
    Byvoid
    Product
    Open Chinese Convert
    Vendor
    Byvoid
    Product
    Opencc

    Exploits

    https://github.com/BYVoid/OpenCC/issues/997https://vuldb.com/?submit.733347https://github.com/BYVoid/OpenCC/issues/997

    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