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    CVE-2025-11964

    On Windows only, if libpcap needs to convert a Windows error message to UTF-8 and the message includes characters that UTF-8 represents using 4 bytes, utf_16le_to_utf_8_truncated() can write data beyond the end of the provided buffer.

    Published:Dec 31, 2025
    Last Modified:Apr 15, 2026
    EPS:Dec 31, 2025
    EPSS Score:0.00017
    CVSS Score:1.9

    Affected Products

    Vendor
    Microsoft
    Product
    Windows
    Vendor
    Tcpdump
    Product
    Libpcap

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-787 Out-of-bounds Write

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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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